Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:jewelry
|
| gptkbp:can_be_confused_with |
gptkb:glass
synthetic opal |
| gptkbp:can_be_cut_as |
freeform
cabochon |
| gptkbp:component |
gptkb:silicon_dioxide
|
| gptkbp:contains |
gptkb:water
|
| gptkbp:displayType |
play-of-color
|
| gptkbp:foundIn |
gptkb:Australia
gptkb:Brazil gptkb:Ethiopia |
| gptkbp:hardnessMohs |
5.5 to 6.5
|
| gptkbp:has_transparency |
translucent to semi-transparent
|
| https://www.w3.org/2000/01/rdf-schema#label |
Crystal Opal
|
| gptkbp:often_set_in |
gptkb:jewelry
|
| gptkbp:refractiveIndex |
1.37 to 1.52
|
| gptkbp:specificGravity |
1.98 to 2.25
|
| gptkbp:type |
precious opal
|
| gptkbp:usedFor |
granite
|
| gptkbp:valuation |
clarity
vivid color play |
| gptkbp:bfsParent |
gptkb:Australian_Opals
|
| gptkbp:bfsLayer |
7
|