Solid 14k Yellow gold Ring inlaid with Gem Grade Crystal Opal from Lightning Ridge, Australia.

Solid 14k Yellow gold Ring inlaid with Gem Grade Crystal Opal from Lightning Ridge, Australia.

BLACK OPAL, COLORED STONE AND DIAMOND RING, CIRCA 1930 The black opal of rectangular shape with cut-corner edges measuring approximately 16.5 by 15.0 mm., the shoulders set with tapering bands of calibré-cut emeralds alternating with calibré-cut sapphires within borders of small single-cut diamonds, mounted in platinum

BLACK OPAL, COLORED STONE AND DIAMOND RING, CIRCA 1930 The black opal of rectangular shape with cut-corner edges measuring approximately 16.5 by 15.0 mm., the shoulders set with tapering bands of calibré-cut emeralds alternating with calibré-cut sapphires within borders of small single-cut diamonds, mounted in platinum

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