AN ART DECO ONYX AND DIAMOND RING
The rectangular-shaped onyx panel inset with a circular-cut diamond to the single-cut diamond geometric surround, 1930s, with French maker's mark and assay mark for gold
AN ART DECO ONYX AND DIAMOND RING
The rectangular-shaped onyx panel inset with a circular-cut diamond to the single-cut diamond geometric surround, 1930s, with French maker's mark and assay mark for gold
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