Accueil > Term: opal
opal
A variety of quartz, of which the finest kind, precious opal, is translucent, with blue or yellow tint, and when polished with a convex surface shows an admirable play of colors; it is found chiefly at Cerwenitza, Austria.
- Partie du discours : noun
- Secteur d’activité/Domaine : Langue
- Catégorie : Encyclopedias
- Organization: Project Gutenberg
0
Créateur
- JohannesDD
- 100% positive feedback
(Sydney, Australia)