Onyx
This Art Deco platinum bow brooch (ca. 1930) features 16 rectangular and trapezoidal faceted black onyxes and 46 round, old European-cut diamonds. Photo courtesy of liveauctioneers.com and Quinn's Auction Galleries - Central Virginia.
Article: Onyx Value, Price, and Jewelry Information
Credit: Quinn’s Auction Galleries – Central Virginia
Gemstone | Quartz, Chalcedony, Onyx |
Natural or man made | Natural |
Jewelry type | Brooch |
Gem State | Faceted |
Color | Black |
Transparency | Opaque |