Home > Term: common opal
common opal
Opal without play of color. Most varieties are of no gemological interest or importance; others because of their color or markings are set in jewelry. Compare: precious opal
- Kalbos dalis: noun
- Pramonės šaka / sritis: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
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- ed.young
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(Milwaukee, United States)