PLATINUM 3.74CT TANZANITE & DIAMOND RING: Platinum 3.74CT simply beautiful tanzanite encircled by 50 round brilliant cut .58CT diamonds draping down the shoulders in two stylish bands. Size 7. Diamonds rated SI in clarity and G-H in color. Weight approx. 10.1 grams. Sold with current Florida Diamond Appraisers GIA graduates appraisal for $8250.