首页 > Term: black opal
black opal
Precious opal with play of color (commonly red or green) displayed against a dark gray (rarely black) body color; e.g., the fine Australian blue opal with flame-colored flashes.
- 词性: noun
- 行业/领域: 采矿
- 类别 一般矿业; Mineral mining
- Government Agency: USBM
0
创建者
- ed.young
- 100% positive feedback
(Milwaukee, United States)