This Edwardian platinum and diamond ring featuring an old European-cut diamond, circa 1915, with a later shank, is available at 1stdibs. The old European brilliant-cut diamond is set within the original octagonal platinum frame, set with 24 round diamonds

This Edwardian platinum and diamond ring featuring an old European-cut diamond, circa 1915, with a later shank, is available at 1stdibs. The old European brilliant-cut diamond is set within the original octagonal platinum frame, set with 24 round diamonds. The later shank is set with 7 round brilliant-cut diamonds on each shoulder.

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