Antique old mine diamond ring with black enamel. Set with three cushion shape old mine diamonds in open back rubover settings with an approximate combined weight of 1.10 carats, to a conforming heavy band with ornate scrolling black enamel to the exterior, to a conforming flat heavy shank. The interior engraved 'S.C. 7th Jan 1874/J.C. 4th Aug 1855'. Tested yellow gold, circa 1873.