Art Deco black opal and diamond ring, circa 1935.
Emerald and diamond pendant, French, circa 1980.
Purple star sapphire and diamond ring by J. Milhening Inc., circa 1935.
Cabochon Ceylon sapphire and diamond cluster ring, circa 1920.
Drop emerald Cabochon and diamond earrings, circa 1970.
Antique cat's eye chrysoberyl and diamond coronet cluster ring, circa 1900.