3.03ct Old Mine Brilliant Diamond Platinum Engagement Ring This is an amazing platinum engagement ring. The ring is centered by a wonderful GIA certified old mine brilliant diamond that weighs 3.03 carats. The color of the diamond is I with VS1 clarity. The center diamond is accentuated by lovely French cut sapphires and sparkling French cut diamonds that weigh approximately 0.40ct. The color of these diamonds is F-G with VS1 clarity. The ring is size 6 1/2 but it can be resized.