BOU012 · advanced search + relationships

Boulder Opal Evidence Relationship Explorer

Follow explicit, typed relationships across the released Boulder Opal Universe. Every factual edge carries source IDs; BOU-authored teaching and navigation bridges are labeled separately. The graph does not predict a stone's origin, authenticity, treatment, rarity or value.

Browse Boulder Opal Universe sections

ExploreLive AtlasLive FieldsLive FormationLive SpecimensLive PatternsLive LabLive LapidaryLive HistoryLive IdentificationLive CollectingLive DiscoveryCurrent GamesLive ResearchLive

Search relationships Compare two nodes

Discovery boundary: this page exposes relationships that BOU has already admitted from source-backed records or explicitly labeled BOU-authored structure. It does not create recommendation nodes, infer new provenance, copy live travel status, classify unknown images, diagnose treatment, authenticate stones, or rank value/rarity/investment potential.

Typed relationship search

Search the evidence graph, not a similarity oracle.

57 nodes and 104 typed relationships are published in BOU012. Filtering changes visibility only; it never creates a new edge.

Search nodes, assertions or source IDs

Relationship type

Evidence class

Showing 104 of 104 typed relationships.

contains recordbou authored structure

Fields index ↔ Winton

The released Fields system contains the Winton locality record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a geological or access claim.

explores recordbou authored structure

Field Explorer ↔ Winton

The Field Explorer includes the Winton record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a map coordinate or access permission.

contains recordbou authored structure

Fields index ↔ Quilpie

The released Fields system contains the Quilpie locality record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a geological or access claim.

explores recordbou authored structure

Field Explorer ↔ Quilpie

The Field Explorer includes the Quilpie record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a map coordinate or access permission.

contains recordbou authored structure

Fields index ↔ Yowah

The released Fields system contains the Yowah locality record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a geological or access claim.

explores recordbou authored structure

Field Explorer ↔ Yowah

The Field Explorer includes the Yowah record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a map coordinate or access permission.

contains recordbou authored structure

Fields index ↔ Koroit

The released Fields system contains the Koroit locality record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a geological or access claim.

explores recordbou authored structure

Field Explorer ↔ Koroit

The Field Explorer includes the Koroit record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a map coordinate or access permission.

contains recordbou authored structure

Fields index ↔ Opalton

The released Fields system contains the Opalton locality record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a geological or access claim.

explores recordbou authored structure

Field Explorer ↔ Opalton

The Field Explorer includes the Opalton record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a map coordinate or access permission.

contains recordbou authored structure

Fields index ↔ Toompine

The released Fields system contains the Toompine locality record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a geological or access claim.

explores recordbou authored structure

Field Explorer ↔ Toompine

The Field Explorer includes the Toompine record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a map coordinate or access permission.

contains recordbou authored structure

Fields index ↔ Eulo

The released Fields system contains the Eulo locality record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a geological or access claim.

explores recordbou authored structure

Field Explorer ↔ Eulo

The Field Explorer includes the Eulo record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a map coordinate or access permission.

contains recordbou authored structure

Fields index ↔ Kynuna

The released Fields system contains the Kynuna locality record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a geological or access claim.

explores recordbou authored structure

Field Explorer ↔ Kynuna

The Field Explorer includes the Kynuna record.

Source class · BOU-authored structure/workflow

This is BOU information architecture, not a map coordinate or access permission.

regional relationsource backed

Winton ↔ Opalton

Official source describes Opalton as about 124 km south-west of Winton.

Sources · BOU-SRC-005

Regional relationship only. It is not a mine boundary, live travel status or permission statement.

regional corridorsource backed

Winton ↔ Kynuna

Queensland western-opal guidance describes the field corridor extending toward Kynuna from the Winton region.

Sources · BOU-SRC-003

Regional relationship only. It is not a mine boundary, live travel status or permission statement.

regional relationsource backed

Quilpie ↔ Toompine

Queensland Government places the Toompine opal fields between Quilpie and Yowah.

Sources · BOU-SRC-006

Regional relationship only. It is not a mine boundary, live travel status or permission statement.

regional relationsource backed

Toompine ↔ Yowah

Queensland Government places the Toompine opal fields between Quilpie and Yowah.

Sources · BOU-SRC-006

Regional relationship only. It is not a mine boundary, live travel status or permission statement.

regional relationsource backed

Yowah ↔ Koroit

GIA reports Yowah about 10 km south-west of Koroit.

Sources · BOU-SRC-007

Regional relationship only. It is not a mine boundary, live travel status or permission statement.

regional relationsource backed

Koroit ↔ Eulo

GIA reports Koroit about 77 km north-northeast of Eulo.

Sources · BOU-SRC-007

Regional relationship only. It is not a mine boundary, live travel status or permission statement.

contains stagebou authored structure

Formation + Geology ↔ 1 · Sedimentary setting

Formation contains the 1 · Sedimentary setting teaching stage.

Source class · BOU-authored structure/workflow

BOU-authored structure; external sources support stage content, not the page architecture.

contains stagebou authored structure

Formation + Geology ↔ 2 · Silica movement

Formation contains the 2 · Silica movement teaching stage.

Source class · BOU-authored structure/workflow

BOU-authored structure; external sources support stage content, not the page architecture.

contains stagebou authored structure

Formation + Geology ↔ 3 · Ironstone occurrence

Formation contains the 3 · Ironstone occurrence teaching stage.

Source class · BOU-authored structure/workflow

BOU-authored structure; external sources support stage content, not the page architecture.

contains stagebou authored structure

Formation + Geology ↔ 4 · Opal + optics

Formation contains the 4 · Opal + optics teaching stage.

Source class · BOU-authored structure/workflow

BOU-authored structure; external sources support stage content, not the page architecture.

documented formation contextsource backed

Koroit ↔ 3 · Ironstone occurrence

GIA documented ironstone concretions in soft sandstone and opal occurring along seams.

Sources · BOU-SRC-007

Field-scoped geological context; do not generalize the exact geometry to other localities or specimens.

documented formation contextsource backed

Yowah ↔ 3 · Ironstone occurrence

GIA documented mostly siliceous ironstone concretions, other attached forms and multiple concretion-bearing beds.

Sources · BOU-SRC-007

Field-scoped geological context; do not generalize the exact geometry to other localities or specimens.

documented formation contextsource backed

Quilpie ↔ 3 · Ironstone occurrence

GIA documented opal-bearing ironstone concretions and field-specific centre/seam relationships.

Sources · BOU-SRC-007 · BOU-SRC-008

Field-scoped geological context; do not generalize the exact geometry to other localities or specimens.

contains recordbou authored structure

Specimen Cabinet ↔ GIA 1993 cover · large Queensland boulder opal

The Specimen Cabinet contains documented record GIA 1993 cover · large Queensland boulder opal.

Source class · BOU-authored structure/workflow

BOU-authored record structure; specimen facts are source-scoped separately.

contains recordbou authored structure

Specimen Cabinet ↔ GIA 1993 cover · small Queensland boulder opal

The Specimen Cabinet contains documented record GIA 1993 cover · small Queensland boulder opal.

Source class · BOU-authored structure/workflow

BOU-authored record structure; specimen facts are source-scoped separately.

contains recordbou authored structure

Specimen Cabinet ↔ GIA field report · giant Yowah boulder-opal rough

The Specimen Cabinet contains documented record GIA field report · giant Yowah boulder-opal rough.

Source class · BOU-authored structure/workflow

BOU-authored record structure; specimen facts are source-scoped separately.

documented provenancesource backed

GIA field report · giant Yowah boulder-opal rough ↔ Yowah

Yowah opal field; GIA authors reported seeing the rough shortly after extraction from the host’s mine.

Sources · BOU-SRC-007

This provenance applies only to this documented source record; visual resemblance does not transfer it to another stone.

contains recordbou authored structure

Specimen Cabinet ↔ GIA field report · Quilpie opal-bearing ironstone concretion

The Specimen Cabinet contains documented record GIA field report · Quilpie opal-bearing ironstone concretion.

Source class · BOU-authored structure/workflow

BOU-authored record structure; specimen facts are source-scoped separately.

documented provenancesource backed

GIA field report · Quilpie opal-bearing ironstone concretion ↔ Quilpie

Quilpie source; GIA captions the exterior and interior of an opal-bearing ironstone concretion from Quilpie.

Sources · BOU-SRC-007

This provenance applies only to this documented source record; visual resemblance does not transfer it to another stone.

defines termsource backed

Pattern Library ↔ Pinfire / pinpoint

Pinfire / pinpoint: Small, closely set patches of play-of-color.

Sources · BOU006-SRC-001

Descriptive terminology only. Pattern name does not establish geographic origin, rarity, treatment, authenticity or value.

defines termsource backed

Pattern Library ↔ Harlequin / mosaic

Harlequin / mosaic: Broad, angular, closely set patches of play-of-color.

Sources · BOU006-SRC-001 · BOU006-SRC-002

Descriptive terminology only. Pattern name does not establish geographic origin, rarity, treatment, authenticity or value.

defines termsource backed

Pattern Library ↔ Flame

Flame: Sweeping reddish bands or streaks across the stone.

Sources · BOU006-SRC-001 · BOU006-SRC-002

Descriptive terminology only. Pattern name does not establish geographic origin, rarity, treatment, authenticity or value.

defines termsource backed

Pattern Library ↔ Peacock

Peacock: A pattern described by GIA as mainly blue and green.

Sources · BOU006-SRC-001

Descriptive terminology only. Pattern name does not establish geographic origin, rarity, treatment, authenticity or value.

defines termsource backed

Pattern Library ↔ Bands

Bands: Scientific literature on digit patterns records bands among the arrangements of diffraction color in precious opal.

Sources · BOU006-SRC-002

Descriptive terminology only. Pattern name does not establish geographic origin, rarity, treatment, authenticity or value.

defines termsource backed

Pattern Library ↔ Chinese writing

Chinese writing: None

Sources · BOU-SRC-011

Descriptive terminology only. Pattern name does not establish geographic origin, rarity, treatment, authenticity or value.

defines termsource backed

Pattern Library ↔ Ribbon

Ribbon: None

Sources · BOU-SRC-011

Descriptive terminology only. Pattern name does not establish geographic origin, rarity, treatment, authenticity or value.

defines termsource backed

Pattern Library ↔ Flash

Flash: None

Sources · BOU-SRC-011

Descriptive terminology only. Pattern name does not establish geographic origin, rarity, treatment, authenticity or value.

contains layerbou authored structure

Specimen Lab ↔ Ironstone host / matrix

The educational Lab contains the Ironstone host / matrix conceptual layer.

Source class · BOU-authored structure/workflow

The layer is diagrammatic, not segmentation of a real specimen.

teaching bridgebou authored evidence bridge

Ironstone host / matrix ↔ 3 · Ironstone occurrence

BOU links Ironstone host / matrix to the Formation ironstone stage because their teaching scopes share source-supported material concepts.

Sources · BOU-SRC-001 · BOU-SRC-007

This is an authored educational bridge, not a specimen-specific determination.

contains layerbou authored structure

Specimen Lab ↔ Precious / play-of-colour opal

The educational Lab contains the Precious / play-of-colour opal conceptual layer.

Source class · BOU-authored structure/workflow

The layer is diagrammatic, not segmentation of a real specimen.

teaching bridgebou authored evidence bridge

Precious / play-of-colour opal ↔ 4 · Opal + optics

BOU links Precious / play-of-colour opal to the Formation opal stage because their teaching scopes share source-supported material concepts.

Sources · BOU-SRC-011

This is an authored educational bridge, not a specimen-specific determination.

contains layerbou authored structure

Specimen Lab ↔ Common opal / potch

The educational Lab contains the Common opal / potch conceptual layer.

Source class · BOU-authored structure/workflow

The layer is diagrammatic, not segmentation of a real specimen.

teaching bridgebou authored evidence bridge

Common opal / potch ↔ 4 · Opal + optics

BOU links Common opal / potch to the Formation opal stage because their teaching scopes share source-supported material concepts.

Sources · BOU-SRC-011

This is an authored educational bridge, not a specimen-specific determination.

contains layerbou authored structure

Specimen Lab ↔ Structural boundaries / fractures

The educational Lab contains the Structural boundaries / fractures conceptual layer.

Source class · BOU-authored structure/workflow

The layer is diagrammatic, not segmentation of a real specimen.

teaching bridgebou authored evidence bridge

Structural boundaries / fractures ↔ 2 · Silica movement

BOU links Structural boundaries / fractures to the Formation movement stage because their teaching scopes share source-supported material concepts.

Sources · BOU-SRC-001

This is an authored educational bridge, not a specimen-specific determination.

contains eventbou authored structure

Mining + History ↔ Listowel Downs: two institutional summaries use different early milestones

The History timeline contains Listowel Downs: two institutional summaries use different early milestones.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

contains eventbou authored structure

Mining + History ↔ Herbert Bond organizes a Queensland opal syndicate and takes stones to London

The History timeline contains Herbert Bond organizes a Queensland opal syndicate and takes stones to London.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

contains eventbou authored structure

Mining + History ↔ Yowah’s first opal mining lease is registered

The History timeline contains Yowah’s first opal mining lease is registered.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

historical field contextsource backed

Yowah’s first opal mining lease is registered ↔ Yowah

GIA records the first opal mining lease in Yowah as registered in 1884.

Sources · BOU-SRC-007

Historical field context is not present-day access, road, tenure or permission guidance.

contains eventbou authored structure

Mining + History ↔ Quilpie-area opal discovery recorded at Bull Creek

The History timeline contains Quilpie-area opal discovery recorded at Bull Creek.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

historical field contextsource backed

Quilpie-area opal discovery recorded at Bull Creek ↔ Quilpie

GIA reports the first discovery of opal in the Quilpie area at Bull Creek in 1885, north of the current township.

Sources · BOU-SRC-007

Historical field context is not present-day access, road, tenure or permission guidance.

contains eventbou authored structure

Mining + History ↔ Tullie Wollaston helps build overseas demand for Australian opal

The History timeline contains Tullie Wollaston helps build overseas demand for Australian opal.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

contains eventbou authored structure

Mining + History ↔ Toompine field mining expands through underground and open-cut workings

The History timeline contains Toompine field mining expands through underground and open-cut workings.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

historical field contextsource backed

Toompine field mining expands through underground and open-cut workings ↔ Toompine

Queensland Government states that the Toompine opal fields have been extensively mined since the 1890s using underground and open-cut methods.

Sources · BOU009-SRC-005

Historical field context is not present-day access, road, tenure or permission guidance.

contains eventbou authored structure

Mining + History ↔ Opalton activity enters the association’s recorded field chronology

The History timeline contains Opalton activity enters the association’s recorded field chronology.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

historical field contextsource backed

Opalton activity enters the association’s recorded field chronology ↔ Opalton

The Queensland Boulder Opal Association reports mining activity in the Opalton region from 1894 onward. BOU uses this as an association-reported field-history account, not as sole authority for discovery credit.

Sources · BOU009-SRC-004

Historical field context is not present-day access, road, tenure or permission guidance.

historical field contextsource backed

Opalton activity enters the association’s recorded field chronology ↔ Winton

Sources · BOU009-SRC-004

Historical field context is not present-day access, road, tenure or permission guidance.

contains eventbou authored structure

Mining + History ↔ Koroit discovery and a small opal rush

The History timeline contains Koroit discovery and a small opal rush.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

historical field contextsource backed

Koroit discovery and a small opal rush ↔ Koroit

GIA reports opal first discovered at Koroit in 1897, when a syndicate was formed by the manager of Tilbaroo Station, followed by a small opal rush.

Sources · BOU-SRC-007

Historical field context is not present-day access, road, tenure or permission guidance.

contains eventbou authored structure

Mining + History ↔ Yowah population reaches about 100

The History timeline contains Yowah population reaches about 100.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

historical field contextsource backed

Yowah population reaches about 100 ↔ Yowah

GIA reports that by 1902 Yowah’s population had reached 100.

Sources · BOU-SRC-007

Historical field context is not present-day access, road, tenure or permission guidance.

contains eventbou authored structure

Mining + History ↔ Queensland boulder opal attracts renewed interest

The History timeline contains Queensland boulder opal attracts renewed interest.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

historical field contextsource backed

Queensland boulder opal attracts renewed interest ↔ Winton

GIA’s 1993 Queensland boulder-opal study describes renewed interest in Queensland deposits during the 1960s and 1970s after a long period of reduced activity.

Sources · BOU009-SRC-001

Historical field context is not present-day access, road, tenure or permission guidance.

historical field contextsource backed

Queensland boulder opal attracts renewed interest ↔ Quilpie

GIA’s 1993 Queensland boulder-opal study describes renewed interest in Queensland deposits during the 1960s and 1970s after a long period of reduced activity.

Sources · BOU009-SRC-001

Historical field context is not present-day access, road, tenure or permission guidance.

historical field contextsource backed

Queensland boulder opal attracts renewed interest ↔ Yowah

GIA’s 1993 Queensland boulder-opal study describes renewed interest in Queensland deposits during the 1960s and 1970s after a long period of reduced activity.

Sources · BOU009-SRC-001

Historical field context is not present-day access, road, tenure or permission guidance.

historical field contextsource backed

Queensland boulder opal attracts renewed interest ↔ Koroit

GIA’s 1993 Queensland boulder-opal study describes renewed interest in Queensland deposits during the 1960s and 1970s after a long period of reduced activity.

Sources · BOU009-SRC-001

Historical field context is not present-day access, road, tenure or permission guidance.

historical field contextsource backed

Queensland boulder opal attracts renewed interest ↔ Opalton

GIA’s 1993 Queensland boulder-opal study describes renewed interest in Queensland deposits during the 1960s and 1970s after a long period of reduced activity.

Sources · BOU009-SRC-001

Historical field context is not present-day access, road, tenure or permission guidance.

historical field contextsource backed

Queensland boulder opal attracts renewed interest ↔ Toompine

GIA’s 1993 Queensland boulder-opal study describes renewed interest in Queensland deposits during the 1960s and 1970s after a long period of reduced activity.

Sources · BOU009-SRC-001

Historical field context is not present-day access, road, tenure or permission guidance.

historical field contextsource backed

Queensland boulder opal attracts renewed interest ↔ Eulo

GIA’s 1993 Queensland boulder-opal study describes renewed interest in Queensland deposits during the 1960s and 1970s after a long period of reduced activity.

Sources · BOU009-SRC-001

Historical field context is not present-day access, road, tenure or permission guidance.

historical field contextsource backed

Queensland boulder opal attracts renewed interest ↔ Kynuna

GIA’s 1993 Queensland boulder-opal study describes renewed interest in Queensland deposits during the 1960s and 1970s after a long period of reduced activity.

Sources · BOU009-SRC-001

Historical field context is not present-day access, road, tenure or permission guidance.

contains eventbou authored structure

Mining + History ↔ Koroit enters a modern development phase

The History timeline contains Koroit enters a modern development phase.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

historical field contextsource backed

Koroit enters a modern development phase ↔ Koroit

GIA describes the most recent development of the Koroit field as beginning in the 1970s.

Sources · BOU-SRC-007

Historical field context is not present-day access, road, tenure or permission guidance.

contains eventbou authored structure

Mining + History ↔ Queensland Boulder Opal Association forms in Winton

The History timeline contains Queensland Boulder Opal Association forms in Winton.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

historical field contextsource backed

Queensland Boulder Opal Association forms in Winton ↔ Winton

GIA’s 1993 study described the Queensland Boulder Opal Association as newly formed, while the association’s own history states it was founded in Winton in 1992 and identifies Vince Evert as founding president.

Sources · BOU009-SRC-001 · BOU009-SRC-003

Historical field context is not present-day access, road, tenure or permission guidance.

contains eventbou authored structure

Mining + History ↔ First Boulder Opal Auction reported in Winton

The History timeline contains First Boulder Opal Auction reported in Winton.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

historical field contextsource backed

First Boulder Opal Auction reported in Winton ↔ Winton

The Queensland Boulder Opal Association reports that its committee organized the first Boulder Opal Auction in Winton on 29 May 1993.

Sources · BOU009-SRC-003

Historical field context is not present-day access, road, tenure or permission guidance.

contains eventbou authored structure

Mining + History ↔ GIA field research documents Koroit, Yowah and Quilpie

The History timeline contains GIA field research documents Koroit, Yowah and Quilpie.

Source class · BOU-authored structure/workflow

BOU-authored timeline structure; the event claim remains source-classed.

historical field contextsource backed

GIA field research documents Koroit, Yowah and Quilpie ↔ Koroit

GIA reports that its team visited Koroit, Yowah and Quilpie in June 2015 to document geology, mining and opal culture.

Sources · BOU-SRC-007 · BOU-SRC-008

Historical field context is not present-day access, road, tenure or permission guidance.

historical field contextsource backed

GIA field research documents Koroit, Yowah and Quilpie ↔ Yowah

GIA reports that its team visited Koroit, Yowah and Quilpie in June 2015 to document geology, mining and opal culture.

Sources · BOU-SRC-007 · BOU-SRC-008

Historical field context is not present-day access, road, tenure or permission guidance.

historical field contextsource backed

GIA field research documents Koroit, Yowah and Quilpie ↔ Quilpie

GIA reports that its team visited Koroit, Yowah and Quilpie in June 2015 to document geology, mining and opal culture.

Sources · BOU-SRC-007 · BOU-SRC-008

Historical field context is not present-day access, road, tenure or permission guidance.

defines evidence levelbou authored structure

Identification + Care ↔ Visual observation only

Identification defines Visual observation only as a separate evidence class.

Source class · BOU-authored structure/workflow

This is an evidence-handling framework, not a specimen determination.

defines evidence levelbou authored structure

Identification + Care ↔ Seller / collector statement

Identification defines Seller / collector statement as a separate evidence class.

Source class · BOU-authored structure/workflow

This is an evidence-handling framework, not a specimen determination.

defines evidence levelbou authored structure

Identification + Care ↔ Institutional / collection record

Identification defines Institutional / collection record as a separate evidence class.

Source class · BOU-authored structure/workflow

This is an evidence-handling framework, not a specimen determination.

defines evidence levelbou authored structure

Identification + Care ↔ Gemological laboratory report

Identification defines Gemological laboratory report as a separate evidence class.

Source class · BOU-authored structure/workflow

This is an evidence-handling framework, not a specimen determination.

documentation bridgebou authored evidence bridge

Specimen Cabinet ↔ Institutional / collection record

BOU encourages documented collection/institutional records to be interpreted within the exact source record scope.

Sources · BOU-SRC-011

Does not authenticate a different stone or extend provenance by visual similarity.

collector evidence bridgebou authored structure

Collector Notebook ↔ Specimen Cabinet

The Collector Evidence Notebook links to Specimen Cabinet as a released evidence/context system.

Source class · BOU-authored structure/workflow

Workflow connection only; it creates no appraisal, authenticity, provenance or rarity conclusion.

collector evidence bridgebou authored structure

Collector Notebook ↔ Pattern Library

The Collector Evidence Notebook links to Pattern Library as a released evidence/context system.

Source class · BOU-authored structure/workflow

Workflow connection only; it creates no appraisal, authenticity, provenance or rarity conclusion.

collector evidence bridgebou authored structure

Collector Notebook ↔ Specimen Lab

The Collector Evidence Notebook links to Specimen Lab as a released evidence/context system.

Source class · BOU-authored structure/workflow

Workflow connection only; it creates no appraisal, authenticity, provenance or rarity conclusion.

collector evidence bridgebou authored structure

Collector Notebook ↔ Formation + Geology

The Collector Evidence Notebook links to Formation + Geology as a released evidence/context system.

Source class · BOU-authored structure/workflow

Workflow connection only; it creates no appraisal, authenticity, provenance or rarity conclusion.

collector evidence bridgebou authored structure

Collector Notebook ↔ Fields index

The Collector Evidence Notebook links to Fields index as a released evidence/context system.

Source class · BOU-authored structure/workflow

Workflow connection only; it creates no appraisal, authenticity, provenance or rarity conclusion.

collector evidence bridgebou authored structure

Collector Notebook ↔ Field Explorer

The Collector Evidence Notebook links to Field Explorer as a released evidence/context system.

Source class · BOU-authored structure/workflow

Workflow connection only; it creates no appraisal, authenticity, provenance or rarity conclusion.

collector evidence bridgebou authored structure

Collector Notebook ↔ Lapidary Lab

The Collector Evidence Notebook links to Lapidary Lab as a released evidence/context system.

Source class · BOU-authored structure/workflow

Workflow connection only; it creates no appraisal, authenticity, provenance or rarity conclusion.

collector evidence bridgebou authored structure

Collector Notebook ↔ Mining + History

The Collector Evidence Notebook links to Mining + History as a released evidence/context system.

Source class · BOU-authored structure/workflow

Workflow connection only; it creates no appraisal, authenticity, provenance or rarity conclusion.

collector evidence bridgebou authored structure

Collector Notebook ↔ Identification + Care

The Collector Evidence Notebook links to Identification + Care as a released evidence/context system.

Source class · BOU-authored structure/workflow

Workflow connection only; it creates no appraisal, authenticity, provenance or rarity conclusion.

discovery entrybou authored structure

Discovery Graph ↔ Field Explorer

Discovery exposes source-visible relationships from the Field Explorer.

Source class · BOU-authored structure/workflow

Navigation/discovery relationship only.

discovery entrybou authored structure

Discovery Graph ↔ Specimen Cabinet

Discovery exposes documented specimen relationships.

Source class · BOU-authored structure/workflow

Navigation/discovery relationship only.

discovery entrybou authored structure

Discovery Graph ↔ Formation + Geology

Discovery exposes source-scoped formation relationships.

Source class · BOU-authored structure/workflow

Navigation/discovery relationship only.

discovery entrybou authored structure

Discovery Graph ↔ Mining + History

Discovery exposes source-classed historical relationships.

Source class · BOU-authored structure/workflow

Navigation/discovery relationship only.

Direct + shared-neighbor comparison

Compare graph structure without inventing a conclusion.

Choose two published nodes. BOU reports direct typed edges and shared neighbors only.

First nodeSecond node

Choose two different nodes

Comparison shows only explicit direct relationships and shared neighbors already present in the published graph.

Node directory

What the graph can actually connect.

Surface, locality, specimen, pattern, formation, Lab, history and evidence-level nodes remain distinct classes.

evidence levelGemological laboratory reportSupports: natural versus laboratory-grown identification and detectable treatment reporting when within the actual report scope

evidence levelInstitutional / collection recordSupports: record identity, accession/context and stated provenance within the source record’s scope

evidence levelSeller / collector statementSupports: recording what was represented and by whom, preserving a dated claim or disclosure for later verification

evidence levelVisual observation onlySupports: visible body tone, transparency, matrix/host relationship, play-of-color presence, visible pattern description, visible surface/condition notes

formation stage1 · Sedimentary settingAustralian opal formation context

formation stage2 · Silica movementWeathering, groundwater, pathways

formation stage3 · Ironstone occurrenceConcretions, nodules and seams

formation stage4 · Opal + opticsPrecious opal, common opal and potch

history eventFirst Boulder Opal Auction reported in WintonThe Queensland Boulder Opal Association reports that its committee organized the first Boulder Opal Auction in Winton on 29 May 1993.

history eventGIA field research documents Koroit, Yowah and QuilpieGIA reports that its team visited Koroit, Yowah and Quilpie in June 2015 to document geology, mining and opal culture.

history eventHerbert Bond organizes a Queensland opal syndicate and takes stones to LondonGIA reports that Toowoomba jeweller Herbert Bond organized mine owners into an opal syndicate in 1879 and took stones to London in an effort to establish a market.

history eventKoroit discovery and a small opal rushGIA reports opal first discovered at Koroit in 1897, when a syndicate was formed by the manager of Tilbaroo Station, followed by a small opal rush.

history eventKoroit enters a modern development phaseGIA describes the most recent development of the Koroit field as beginning in the 1970s.

history eventListowel Downs: two institutional summaries use different early milestonesGIA reports saleable precious opal obtained near Listowel Downs around 1870, while Geoscience Australia states opal was first mined commercially at Listowel Downs in 1875. BOU preserves both formulations rather than inventing one exact “first” date.

history eventOpalton activity enters the association’s recorded field chronologyThe Queensland Boulder Opal Association reports mining activity in the Opalton region from 1894 onward. BOU uses this as an association-reported field-history account, not as sole authority for discovery credit.

history eventQueensland Boulder Opal Association forms in WintonGIA’s 1993 study described the Queensland Boulder Opal Association as newly formed, while the association’s own history states it was founded in Winton in 1992 and identifies Vince Evert as founding president.

history eventQueensland boulder opal attracts renewed interestGIA’s 1993 Queensland boulder-opal study describes renewed interest in Queensland deposits during the 1960s and 1970s after a long period of reduced activity.

history eventQuilpie-area opal discovery recorded at Bull CreekGIA reports the first discovery of opal in the Quilpie area at Bull Creek in 1885, north of the current township.

history eventToompine field mining expands through underground and open-cut workingsQueensland Government states that the Toompine opal fields have been extensively mined since the 1890s using underground and open-cut methods.

history eventTullie Wollaston helps build overseas demand for Australian opalGIA describes Australian opal as becoming popular in London by the 1890s through the efforts of opal dealer Tullie Wollaston. The Australian Dictionary of Biography independently supports his identity and role as an opal dealer.

history eventYowah population reaches about 100GIA reports that by 1902 Yowah’s population had reached 100.

history eventYowah’s first opal mining lease is registeredGIA records the first opal mining lease in Yowah as registered in 1884.

lab layerCommon opal / potchConceptual teaching band only. It is not a specimen observation.

lab layerIronstone host / matrixGeneric host/matrix relationship only. The shape is not traced from a real specimen.

lab layerPrecious / play-of-colour opalConceptual opal seam. It does not identify precious opal in an uploaded or photographed object.

lab layerStructural boundaries / fracturesDiagrammatic crack/boundary cues only; no real fracture network is segmented or predicted.

localityEuloGeoscience Australia describes Queensland boulder-opal localities as extending from the Eulo and Cunnamulla district north-west toward Kynuna.; GIA places Koroit about 77 km north-northeast of Eulo.

localityKoroitGIA places Koroit in the Cunnamulla Mineral District about 77 km north-northeast of Eulo.; GIA records opal discovery at Koroit in 1897 and documents the field as a distinctive boulder-opal source.

localityKynunaQueensland Government and Geoscience Australia use Kynuna as a northern extent reference for the western Queensland boulder-opal belt.

localityOpaltonQueensland Government describes the Opalton field as one of Queensland’s largest and most extensively worked opal deposits.; The designated fossicking land is described as about 124 km south-west of Winton.

localityQuilpieQuilpie is a major Queensland boulder-opal mining and trading centre in the western opal fields.; GIA records the first opal discovery in the Quilpie area at Bull Creek in 1885, north of the present township.

localityToompineDuck Creek and Sheep Station Creek designated fossicking lands are in the Toompine opal fields.; Queensland Government says the Toompine fields have been extensively mined since the 1890s.

localityWintonWinton is one of the main Queensland opal mining and wholesale centres identified by Geoscience Australia.; Queensland Government places Winton within the western opal-field corridor and identifies the wider region with boulder opal.

localityYowahYowah is a western Queensland boulder-opal locality noted for ironstone concretions known as Yowah nuts.; GIA records Yowah’s first opal mining lease in 1884 and places the town about 10 km south-west of Koroit.

pattern termBandsScientific literature on digit patterns records bands among the arrangements of diffraction color in precious opal.

pattern termChinese writing

pattern termFlameSweeping reddish bands or streaks across the stone.

pattern termFlash

pattern termHarlequin / mosaicBroad, angular, closely set patches of play-of-color.

pattern termPeacockA pattern described by GIA as mainly blue and green.

pattern termPinfire / pinpointSmall, closely set patches of play-of-color.

pattern termRibbon

specimenGIA 1993 cover · large Queensland boulder opalA measured Queensland boulder-opal gem identified in the Spring 1993 Gems & Gemology cover caption, with ironstone matrix backing and a documented collection attribution.

specimenGIA 1993 cover · small Queensland boulder opalThe smallest Queensland boulder-opal piece identified in the Spring 1993 Gems & Gemology cover caption, with exact dimensions and ironstone matrix backing.

specimenGIA field report · Quilpie opal-bearing ironstone concretionA documented Quilpie ironstone concretion shown externally by GIA with boulder opal at its centre. ICU does not reproduce the source photograph.

specimenGIA field report · giant Yowah boulder-opal roughA giant boulder-opal rough observed by GIA at Yowah and described as showing bright bluish play-of-color. The source does not establish dimensions, treatment status or a museum accession.

surfaceCollector NotebookLocal evidence notebook, no appraisal.

surfaceDiscovery GraphEvidence-aware relationship discovery.

surfaceField ExplorerEight source-visible Queensland locality records.

surfaceFields indexReleased field/locality records.

surfaceFormation + GeologyConceptual formation stages with source scopes.

surfaceIdentification + CareEvidence-class literacy and conservative care.

surfaceLapidary LabSynthetic decision simulation.

surfaceMining + HistorySource-classed chronology.

surfacePattern LibraryDescriptive pattern terminology.

surfaceSpecimen CabinetFour documented specimen records.

surfaceSpecimen LabConceptual material/anatomy layers.

Provenance visibility

Source IDs stay attached to factual edges.

The graph reuses sources already admitted by earlier BOU checkpoints. No new external factual source is introduced solely to make the graph denser.

BOU-SRC-001BOU-SRC-003BOU-SRC-005BOU-SRC-006BOU-SRC-007BOU-SRC-008BOU-SRC-011BOU006-SRC-001BOU006-SRC-002BOU009-SRC-001BOU009-SRC-003BOU009-SRC-004BOU009-SRC-005

No specimen-pattern edge is admitted in BOU012 because the BOU006 specimen records do not contain a sourced pattern assignment. Absence of a graph edge is not proof that no real-world relationship exists; it means BOU has not admitted one from its current evidence corpus.

Graph-reading boundary

An edge means “documented relationship,” not “safe inference.”

The evidence graph can connect field geology, route architecture and documented specimens. It must not invent an edge because two nodes look similar or because a user wants an origin, treatment or value answer.

ICU / CONNECTED DISCOVERY

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