An art deco black opal and diamond ring, circa 1925 The oval-shaped cabochon black opal with central horizontal row of single-cut diamonds, to pierced graduated shoulders, diamonds approx. total, ring size P Opal Jewelry, Jewlery, Fine Jewelry, Art Deco Ring, Art Deco Jewelry, 1920s, Antique Jewelry, Vintage Jewelry, Black Opal
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