Diamond and Diamond Ring The cushion cut yellow diamond weighing approximately .69 carats, set within a mounting comprised of round diamonds weighing approximately .91 cts. mounted in 18kt white and yellow gold 7.64 grams (gross) , size 6 1/2 SHIPPING Free Shipping Express to Continental US, arrives in 5 to 6 days. Authentication: Accompanied by Trapp Gemologocal Services, LLC, dated 15th October 2015, stating :Yellow diamond .69 ct., VS, fancy yellow, cushion cut. Side stones 120 round brilliant cut, .91 ct., VS, G. Size 6.5.