Statements (48)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:item
|
| gptkbp:associated_with |
Montana's_state_gem
|
| gptkbp:awards |
vitreous
September birthstone |
| gptkbp:careInstructions |
requires special care to maintain quality
|
| gptkbp:certifications |
certified by gemological laboratories
|
| gptkbp:challenges |
9 on the Mohs scale
|
| gptkbp:characteristics |
high refractive index
|
| gptkbp:colors |
blue
primarily blue |
| gptkbp:competitors |
high demand in luxury markets
|
| gptkbp:cultural_significance |
valued in various cultures
|
| gptkbp:culturalHeritage |
mentioned in literature and art
|
| gptkbp:curbWeight |
3.95 to 4.03
|
| gptkbp:emphasizes |
typically eye-clean
|
| gptkbp:environmental_impact |
mining has environmental considerations
|
| gptkbp:famous_for |
collected by gem enthusiasts
featured in designer collections rich blue color |
| gptkbp:grades |
graded by hue, tone, and saturation
|
| gptkbp:historical_significance |
important_in_American_gem_history
|
| https://www.w3.org/2000/01/rdf-schema#label |
Yogo Sapphire
|
| gptkbp:impact |
none, typically untreated
usually untreated |
| gptkbp:investmentFocus |
considered a good investment
|
| gptkbp:legacy |
used in royal jewelry
|
| gptkbp:market |
international gemstone market
|
| gptkbp:notable_artist |
used by renowned jewelry designers
|
| gptkbp:notable_event |
exhibited in gem shows
|
| gptkbp:notableFeature |
used in high-end jewelry
Yogo_Gulch |
| gptkbp:novelty |
considered rare
|
| gptkbp:nutritionalValue |
aluminum oxide with trace elements
|
| gptkbp:origin |
gptkb:Montana,_USA
|
| gptkbp:productionCompany |
placer mining
has a rich mining history |
| gptkbp:related_to |
other sapphires
|
| gptkbp:releaseYear |
discovered in the 1890s
|
| gptkbp:saw |
often faceted
|
| gptkbp:size |
varies from small to large stones
|
| gptkbp:style |
brilliant cut, cushion cut
|
| gptkbp:sustainability |
efforts for sustainable mining practices
|
| gptkbp:symbolism |
symbol of wisdom and nobility
|
| gptkbp:technique |
advanced cutting techniques used
|
| gptkbp:type |
sapphire
|
| gptkbp:uses |
jewelry
|
| gptkbp:values |
highly valued
|
| gptkbp:vision |
can exhibit asterism
|