PLATINUM TANZANITE AND DIAMOND RING: This signed, platinum ring features a single, oval tanzanite gem. The gem measures approx. 12.2 x 10 mm. It also contains 50 round brilliant-cut diamonds. Weight: approx. .72 Ct. Total weight: approx. 8.5 grams. Signed ''Oscar Friedman''. Size: 6.75. Sold with current Florida Diamond Appraisers appraisal for $19,350.