THREE CABOCHON GEM-SET, DIAMOND AND GOLD RINGS

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THREE CABOCHON GEM-SET, DIAMOND AND GOLD RINGS
One set with a cabochon ruby, flanked on each side by a circular-cut diamond, within an 18K gold gypsy mount, the other two of similar design, one set with a cabochon emerald; and the other, with a cabochon sapphire, with English hallmarks (3)