Quilpie source; GIA captions the exterior and interior of an opal-bearing ironstone concretion from Quilpie.
Source locator · GIA Queensland Opal Fields article, Quilpie section, opal-bearing ironstone concretion caption.
Source IDs · BOU-SRC-007
Documented specimen record · BOU006
GIA field report · Quilpie opal-bearing ironstone concretion
A documented Quilpie ironstone concretion shown externally by GIA with boulder opal at its centre. ICU does not reproduce the source photograph.
Diagram · not specimen media · source image remains external
bou:specimen:gia-2017-quilpie-concretion
Evidence record
- Source / collection
- Source image credited by GIA and courtesy of Sunrise Opal; no separate ICU collection accession asserted.
- Provenance
- Quilpie source; GIA captions the exterior and interior of an opal-bearing ironstone concretion from Quilpie. Confidence: documented.
- Host material
- ironstone concretion
- Opal component
- boulder opal at the centre of the documented concretion
- State
- rough section
- Dimensions
- Not stated by source
- Treatment / synthetic
- not stated by source; not inferred
- Pattern descriptor
- No named pattern assigned by the source; BOU does not add one.
Media rights
Authentic source image kept at the source.
The record is real; the diagram above is not the specimen. BOU006 does not reproduce the source photograph because reusable image rights were not independently established for ICU.
Rights status: external_reference_only_not_reproduced. Photo by Andrew Lucas/GIA, courtesy of Sunrise Opal; reuse rights not independently licensed for ICU.
Interpretation boundary
What stays unknown stays unknown.
This route does not infer treatment, mine identity, rarity, price or authenticity from appearance. A documented field relationship is linked only when the cited record supports it.
Evidence ledger
What is documented, contextual, observed and unresolved.
The ledger is intentionally fail-closed: a missing fact stays missing.
Use field/geology only within the documented link.
- Field-level geology and history may be linked as context because the specimen source explicitly names the field; that context is not additional mine-level provenance.
Description stays descriptive.
- GIA captions an opal-bearing ironstone concretion from Quilpie and documents boulder opal at its centre.
ICU visual classification status · not performed.
Unknowns are part of the record.
- Dimensions are not stated in the published specimen record.
- Treatment status is not established by the cited source record.
- Natural versus laboratory-grown status is not independently determined by ICU.
- Monetary value, rarity grade and investment quality are outside this record.
- Mine-level origin is unresolved unless a source explicitly establishes it.
When natural/laboratory-grown or treatment determination matters, use qualified gemological examination/testing. That still does not create automatic geographic origin or valuation.
ICU / CONNECTED DISCOVERY
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