Visual Entry · evidence-aware deep view
Amethyst Purple Color
Amethyst’s purple color can range from pale violet to saturated purple within transparent quartz.
Visual literacy · read before concluding
Four questions for this image
Awe is the invitation. Interpretation starts by separating the subject, scale, representation, mechanism, and evidence.
1 · What am I looking at?
Amethyst’s purple color can range from pale violet to saturated purple within transparent quartz.
Displayed: visualization
2 · At what scale?
Object scale. A bounded object or specimen read at human viewing scale.
3 · How was it represented?
Displayed media: Deterministic ICU-authored vector explanatory visualization.
Reviewed source method: Not established in normalized record
BVU does not infer an imaging/capture method from appearance alone. Follow the reviewed source record for further context.
4 · What creates the visible effect?
source backed: The Smithsonian identifies the amethyst specimen. Gemological research describes amethyst purple as associated with iron-related color centers activated by natural irradiation; this is a general mechanism and is not asserted as a specimen-specific chemical analysis.
Current visual-property tags: color, transparency.
Explanation boundary
Why it looks this way
Only source-backed claims can carry the mechanism/explanation role here. Curated or unknown material stays visibly separate.
The Smithsonian identifies the amethyst specimen. Gemological research describes amethyst purple as associated with iron-related color centers activated by natural irradiation; this is a general mechanism and is not asserted as a specimen-specific chemical analysis.
Provenance & evidence
Know what supports the entry.
Source pages support subject identity and claims. The displayed SVG has its own representation and rights record.
It describes the relationship between a factual statement and reviewed evidence. It does not mean the SVG shown on this page is a source photograph, museum image or scientific plate.
Amethyst specimen
- Canonical locator
- https://naturalhistory.si.edu/object/nmnhmineralsciences_1058136
- Source date
- Not specified in record
- Creator / author
- Not specified in record
- Rights note
- Smithsonian collection source page reviewed; factual/provenance use here.
Amethyst from Boudi, Morocco
- Canonical locator
- https://www.gia.edu/gems-gemology/spring-2015-amethyst-from-boudi-morocco
- Source date
- 2015
- Creator / author
- Not specified in record
- Rights note
- GIA article used only for the general amethyst color-center mechanism; not specimen-specific chemistry.
Runtime-media boundary
Documentary source pages reviewed. Published runtime media is an original explanatory SVG visualization, not a copied source image.
- reviewed_usable · Original deterministic SVG explanatory visualizations authored for BVU004. These files are ICU-owned presentation media and are visibly labeled as visualizations, not documentary source images.
Displayed media SHA-256: 4fcc94929ac93128f8338ebb9a54f6d481ff5d42fa27888b0ee0d479e175b5e4
Documentary-media review
This entry keeps its reviewed institutional source pages as provenance/factual references. The current media audit did not promote documentary bytes because explicit reusable rights and same-origin original-byte localization were not both cleared in this bounded pass.
- Runtime image
- Existing same-origin explanatory SVG visualization
- Documentary runtime
- Not published
- Remote hotlink
- Not used
Typed connections
Follow the relationship without upgrading its evidence.
Directionality and evidence class are rendered from the canonical relationship records.
Collections & Atlas
Return through a useful visual lens.
Collection membership is editorial discovery context, not proof of shared mechanism or origin.
Light in Materials
Materials where color and light behavior become the central visual question.
BVU004 editorial collection. Membership indicates a useful discovery grouping, not shared origin, influence or mechanism.
Curated journeys
See where editors place this entry next.
These paths are editorial navigation. They do not alter this entry’s claim, provenance or relationship evidence state.