PLATINUM 6.63 CT TANZANITE & DIAMOND RING: 6.63 CT tanzanite is set within an inner basket and outer diamond bezel supported by diamond cut-out shoulders. Tanzanite is eye clean and blue-violet in color. Graded loose prior to setting in GIA Lab, report #2171872642. 96 round brilliant cut diamonds approx .69 CT, rated SI2 to I1 in clarity and F-H in color. Weight approx 10.0 grams. Sold with current appraisal by American International Gemologists Graduate Gemologist for $20,270.