gemstone
Let an agent handle gemstones by identity, properties, treatments, grading, ethical sourcing and valuation, recommending laboratory reports.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent handle gemstones by identity, properties, treatments, grading, ethical sourcing and valuation, recommending laboratory reports.
A mineral, rock or organic material cut and polished for jewellery or ornament, valued for beauty, durability and rarity, such as diamond, sapphire, ruby, emerald and opal; synthetic and treated stones are common.
What it is for: Jewellery, ornament, investment and heritage objects.
It can be identify gem species and varieties; understand treatments and synthetics; read laboratory reports; check ethical sourcing.
Distinguishing features
Valued for beauty and durability
Natural, synthetic or treated
Graded by laboratories
Ethical sourcing concerns
What it looks like
Cut and polished coloured or colourless stones in settings.
How it is recognised
Cut, colour, clarity and carat
Laboratory report numbers
Imitations such as glass look similar
Related models
is a kind of - category
is used in - application
is graded by - authority
is related to - property
In practice
Families and kinds
diamonds
corundum (ruby and sapphire)
beryl (emerald and aquamarine)
organic gems such as pearl and amber
engraved and seal stones (historical)
Standards and regulation
Kimberley Process Certification Scheme
CIBJO Blue Book nomenclature
Consumer protection on disclosure of treatments
Failure modes and hazards
Undisclosed treatments or synthetics
Conflict-sourced stones
Agents giving investment advice
Also called
+25
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Identity Which gem.
Laboratories identify.
Species
Mineral and variety.
Species
Gem identity.
- What gem species and variety is it, according to a laboratory report? provenance
- Is it natural or synthetic? boundary
Treatment
Enhancements.
Treatment
Treatments.
- Has it been treated, such as heated or filled? provenance
- Was this disclosed? boundary
Grading Quality.
Grading follows standards.
Quality
Four Cs and more.
Quality
Quality grading.
- What are its colour, clarity, cut and carat weight? measurement
- Which grading system was used? provenance
Report
Verification.
Report
Report verification.
- Can the laboratory report be verified online? action
- Is the laboratory reputable? boundary
Ethics Sourcing.
Sourcing matters.
Origin
Provenance.
Origin
Origin.
- What is known about the stone origin and chain of custody? provenance
- Is it covered by the Kimberley Process where relevant? provenance
Advice
No investment advice.
Advice
Advice limit.
- Is the user asking whether gems are a good investment? boundary
- How should they be referred to an independent adviser? action
Care Handling.
Gems need care.
Durability
Hardness.
Durability
Durability.
- How hard and tough is the stone? measurement
- What can damage it? boundary
Cleaning
Methods.
Cleaning
Cleaning.
- How should this gem be cleaned safely? provenance
- Should ultrasonic cleaners be avoided? boundary
What the second pass must settle
- Should gem species be separate entries?
- How should laboratory reports be linked?
- How should historical seal stones be linked?