Antique diamond and ruby double cluster ring, circa 1905.
Antique diamond ruby and diamond cluster ring. Set with a round old cut diamond to centre in an open back rubover setting with a weight of 1.00 carats, encircled by sixteen channel set calibré natural unenhanced rubies in open back rubover channel settings with an approximate combined weight of 1.00 carats, further encircled to an outer border and shoulders with thirty four cushion shape old mine diamonds in open back grain settings with a combined weight of 1.00 carats. The total approximate diamond weight is 2.00 carats, to an ornate cluster with a finely engraved gallery, scalloped collet and intricate pierced backholing, leading to a solid tapered shank. Tested rose gold and platinum, circa 1905.