Platinum Tacori "Classic Crescent RoyalT" Diamond Halo Engagement Ring. 4.05 Cttw. G Color, VS Clarity Average Accent Diamonds. Shown in Finger Size 6.5 With 8.5 x 8.5 MM Princess Cut Center for Scale. Center Not Included in Price. Price Will Vary With Size of Center Stone, Finger Size and Metal Type.