Common opal (orange/yellow, no play-of-color)
gem · common
Quick facts
Polished cabochon habit with vitreous to resinous luster, conchoidal fracture and no cleavage, and translucent body; orange to yellow color last and lacking visible play‑of‑color. Without obvious fire, these could be uniformly colored common opals rather than the gem‑trade 'fire opal' label.
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