Virgin Valley Black Fire Opal
GPTKB entity
Statements (30)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
precious gemstone
|
| gptkbp:associatedWith |
fossilized opal
opalized wood |
| gptkbp:color |
black
multicolored play-of-color |
| gptkbp:composition |
hydrated silica
|
| gptkbp:discoveredBy |
early 1900s
|
| gptkbp:form |
volcanic ash beds
|
| gptkbp:foundIn |
gptkb:Nevada
gptkb:United_States gptkb:Virgin_Valley gptkb:Humboldt_County |
| gptkbp:gemstoneOf |
gptkb:Nevada
|
| gptkbp:hardnessMohs |
5.5-6.5
|
| gptkbp:hasResource |
gptkb:Bonanza_Opal_Mine
gptkb:Rainbow_Ridge_Opal_Mine gptkb:Royal_Peacock_Opal_Mine |
| https://www.w3.org/2000/01/rdf-schema#label |
Virgin Valley Black Fire Opal
|
| gptkbp:notableFor |
brilliant play-of-color
rareness |
| gptkbp:officialStateGemstoneOf |
gptkb:Nevada
|
| gptkbp:property |
can craze (develop cracks) when dried
|
| gptkbp:rarity |
very rare
|
| gptkbp:type |
black opal
fire opal |
| gptkbp:usedFor |
gptkb:jewelry
collecting |
| gptkbp:市值 |
high
|
| gptkbp:bfsParent |
gptkb:State_of_Nevada
|
| gptkbp:bfsLayer |
5
|