Van Cleef & Arpels onyx and diamond 'Philippine' ring, French, circa 1960s.
Antique onyx and diamond Brooch with locket back, circa 1860.
Ancient Roman intaglio ring with goddess, circa 1st - 3rd century AD.
Art Deco diamond and onyx coronet cluster ring, circa 1925.
Onyx and diamond coronet cluster ring, circa 1930.
Georgian onyx memorial ring, circa 1828.
Cartier vintage coral & onyx ring, French, circa 1975.
Art Deco onyx, diamond and emerald cabochon brooch, circa 1925.
Art Deco onyx and diamond ring, circa 1935.
Onyx gentleman's dress set, circa 1920.