{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.gemstone","code":"thing-q83437","url":"https://ver.cy/models/thing/q83437/","name":"gemstone","alternateNames":["Mycenaean sealstone","Minoan sealstone","aetites","Eilat stone","sapphire","gem","precious stone","national stone","padparadscha","lapis lazuli","sapphire glass","Umba sapphire"],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"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.","purpose":"Let an agent handle gemstones by identity, properties, treatments, grading, ethical sourcing and valuation, recommending laboratory reports.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Valued for beauty and durability","Natural, synthetic or treated","Graded by laboratories","Ethical sourcing concerns"],"structure":{"bundles":[{"id":"identity","name":"Identity","description":"Which gem.","layers":[{"id":"species","name":"Species","description":"Mineral and variety.","findings":[{"id":"species-finding","name":"Species","description":"Gem identity.","questions":[{"text":"What gem species and variety is it, according to a laboratory report?","kind":"provenance"},{"text":"Is it natural or synthetic?","kind":"boundary"}]}]},{"id":"treatment","name":"Treatment","description":"Enhancements.","findings":[{"id":"treatment-finding","name":"Treatment","description":"Treatments.","questions":[{"text":"Has it been treated, such as heated or filled?","kind":"provenance"},{"text":"Was this disclosed?","kind":"boundary"}]}]}]},{"id":"grading","name":"Grading","description":"Quality.","layers":[{"id":"quality","name":"Quality","description":"Four Cs and more.","findings":[{"id":"quality-finding","name":"Quality","description":"Quality grading.","questions":[{"text":"What are its colour, clarity, cut and carat weight?","kind":"measurement"},{"text":"Which grading system was used?","kind":"provenance"}]}]},{"id":"report","name":"Report","description":"Verification.","findings":[{"id":"report-finding","name":"Report","description":"Report verification.","questions":[{"text":"Can the laboratory report be verified online?","kind":"action"},{"text":"Is the laboratory reputable?","kind":"boundary"}]}]}]},{"id":"ethics","name":"Ethics","description":"Sourcing.","layers":[{"id":"origin","name":"Origin","description":"Provenance.","findings":[{"id":"origin-finding","name":"Origin","description":"Origin.","questions":[{"text":"What is known about the stone origin and chain of custody?","kind":"provenance"},{"text":"Is it covered by the Kimberley Process where relevant?","kind":"provenance"}]}]},{"id":"advice","name":"Advice","description":"No investment advice.","findings":[{"id":"advice-finding","name":"Advice","description":"Advice limit.","questions":[{"text":"Is the user asking whether gems are a good investment?","kind":"boundary"},{"text":"How should they be referred to an independent adviser?","kind":"action"}]}]}]},{"id":"care","name":"Care","description":"Handling.","layers":[{"id":"durability","name":"Durability","description":"Hardness.","findings":[{"id":"durability-finding","name":"Durability","description":"Durability.","questions":[{"text":"How hard and tough is the stone?","kind":"measurement"},{"text":"What can damage it?","kind":"boundary"}]}]},{"id":"cleaning","name":"Cleaning","description":"Methods.","findings":[{"id":"cleaning-finding","name":"Cleaning","description":"Cleaning.","questions":[{"text":"How should this gem be cleaned safely?","kind":"provenance"},{"text":"Should ultrasonic cleaners be avoided?","kind":"boundary"}]}]}]}]},"agentConduct":{"may":["Describe a gemstone's species, treatments and grading from a recognised laboratory report.","Record the provenance and certificates of stones held by an owner."],"mustNot":["Sell or describe a treated, synthetic or imitation stone as natural and untreated.","Help move gemstones in breach of sanctions or certification schemes for conflict stones.","Invent grading reports, weights or origin claims.","Disclose who holds valuable stones and where they are kept."],"requiresHuman":["Valuing a gemstone for sale, insurance or inheritance.","Buying or selling a stone on someone's behalf."]},"ethics":{"considerations":["Gem mining has funded armed conflict and relies on dangerous, poorly paid work.","Gemstone sales depend on trust; misdescription transfers loss to buyers."],"affectedParties":["Miners and mining communities","Buyers and owners","Honest traders"]},"owners":{"steward":"The owner of the stone; gemmological laboratories issue reports but do not own it.","roles":[],"masterSystems":[]},"relations":[{"target":"Q7946","type":"parent","note":"registry parent class"},{"target":"mineral","type":"related","note":"category"},{"target":"jewellery","type":"related","note":"application"},{"target":"gemmological laboratory","type":"related","note":"authority"},{"target":"pleochroism","type":"related","note":"property"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.gemstone","Wikidata: Q83437 (https://www.wikidata.org/wiki/Q83437)"]},"properties":{"applicability":"required","items":["Stone mass:  metric carat - Mass is measured with a calibrated gemstone balance, with one metric carat equal to 200 milligrams.","External dimensions:  millimetres - Length, width and depth are measured with suitable gauges or optical instruments without damaging the stone.","Scratch hardness:  Mohs scale - Hardness depends on mineral identity and is assessed by comparative scratch resistance, although scratching can damage a finished gemstone.","Refractive index:  dimensionless - Refractive index is measured with suitable gemological equipment where transparency, surface geometry and instrument limits permit."]},"recognition":{"applicability":"required","items":["Cut, colour, clarity and carat","Laboratory report numbers","Imitations such as glass look similar","Cut and polished coloured or colourless stones in settings."]},"capabilities":{"applicability":"required","items":["identify gem species and varieties","understand treatments and synthetics","read laboratory reports","check ethical sourcing"]},"hazards":{"applicability":"required","items":["Undisclosed treatments or synthetics","Conflict-sourced stones","Agents giving investment advice"]},"interfaces":{"applicability":"required","items":["Kimberley Process Certification Scheme","CIBJO Blue Book nomenclature","Consumer protection on disclosure of treatments"]},"context":{"applicability":"required","items":["Jewellery, ornament, investment and heritage objects.","diamonds","corundum (ruby and sapphire)","beryl (emerald and aquamarine)","organic gems such as pearl and amber","engraved and seal stones (historical)"]}},"sources":[{"title":"Wikidata item Q83437: gemstone","url":"https://www.wikidata.org/wiki/Q83437","note":"identity and sense of the item"},{"title":"Wikipedia: Gemstone","url":"https://en.wikipedia.org/wiki/Gemstone","note":"general description of the item"}],"openQuestions":["Should gem species be separate entries?","How should laboratory reports be linked?","How should historical seal stones be linked?"],"resources":{"spec":"/models/things/publications/thing-q83437/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q83437/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T11:01:52Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:33+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}