A GROUP OF THREE GEM-SET RINGS, one ring set with a square-cut emerald within a single-cut diamond surround and shoulders, mounted in 18K gold and platinum, ring size N; the second ring of...

A GROUP OF THREE GEM-SET RINGS, one ring set with a square-cut emerald within a single-cut diamond surround and shoulders, mounted in 18K gold and platinum, ring size N; the second ring of Victorian era, set with seed pearls and circular-cut pink sapphires, mounted in 15K gold, ring size P; The last ring set central with an old cushion-shaped diamond between two similarly-cut rubies, mounted in gold, ring size Q

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