Art Deco Platinum Diamond Ring. An estate piece in the CJ Charles collection, this is an Art Deco style ring of platinum set with 2 European cut center diamonds, of 0.5cts each, and 20 side diamonds set in a panel pattern. These side diamonds weigh a total of 0.54cttw, and the total diamond weight in the ring is 1.54cttw. The ring has a leaf pattern engraved down the shank.