• Art Deco onyx and diamond platinum brooch

    Onyx – Natural, Faceted, Black

    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

    GemstoneQuartz, Chalcedony, Onyx
    Natural or man madeNatural
    Jewelry typeBrooch
    Gem StateFaceted