four central marquise diamonds 3.7 x 2.2mm, surrounded by two rows of round brilliant cut diamonds, and further set with a row of pear, marquise and tapered baguette cut diamonds, head dimensions 31 x 22mm, tapered shoulders, each with three rows of round brilliant cut diamonds, estimated approximate total diamond weight 4.10ct, flat shank with sizing insert, approximate size L, unmarked, tested as 18ct gold, weight 19.7g, cased