Statements (33)
Predicate | Object |
---|---|
gptkbp:instanceOf |
granite
|
gptkbp:birthstoneFor |
September
|
gptkbp:chemicalFormula |
Al2O3
|
gptkbp:color |
black
blue gray purple pink |
gptkbp:containsMineral |
corundum
|
gptkbp:countryOfCitizenship |
gptkb:Australia
gptkb:Cambodia gptkb:Madagascar gptkb:Myanmar gptkb:Sri_Lanka gptkb:Tanzania gptkb:Thailand gptkb:United_States |
gptkbp:crystalSystem |
trigonal
|
gptkbp:cutStyle |
cabochon
|
gptkbp:hardnessMohs |
9
|
gptkbp:hasPhenomenon |
gptkb:astronomy
|
https://www.w3.org/2000/01/rdf-schema#label |
Star Sapphire gem
|
gptkbp:luster |
vitreous
|
gptkbp:notableSpecies |
gptkb:Star_of_India
gptkb:Star_of_Asia Black Star of Queensland |
gptkbp:pleochroism |
strong
|
gptkbp:refractiveIndex |
1.762–1.770
|
gptkbp:transparency |
translucent
transparent |
gptkbp:usedFor |
gptkb:jewelry
|
gptkbp:bfsParent |
gptkb:Star_Sapphire_(modern_version)
|
gptkbp:bfsLayer |
5
|