Information AboutOnyx |
| CATEGORIES ABOUT ONYX | |
| quartz varieties | |
| gemstones | |
| SHOPPER'S DELIGHT | |
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Onyx is a banded variety of Chalcedony , a cryptocrystalline form of Quartz . The colors of its bands are white and black. Sardonyx is a variant, where the colored bands are Sard , rather than black. It is usually cut as a Cabochon , or into beads, and is also used for Intaglio s and Cameo s, where the bands make the image contrast with the ground. Some onyx is natural but much is produced by the staining of Agate . CULTURE AND HISTORICAL/MYTHICAL USAGE According to representing the tribe of Joseph . There were also two Shoham stones on the shoulders of the Ephod. SEE ALSO |