Art Deco Platinum and Diamond Ring. 2.60 Carat Weight Transitional CutArt Deco Platinum and diamond ring featuring a Transitional cut diamond weighing 2. 60 carat weight of (I 1) in clarity and (J) in colour. 4 claw setting. Flanked by 2 x Marquise cut diamonds. Current finger size 5 1 2. This ring can be resized. History of the Transitional Cut Diamond. This diamond was cut between 1919 1920's in the US by Henry Morse and his partner Charles Field. Very Good Condition. Accompanied by a Van Rijk appraisal certificate