CUSTOM PLATINUM 3.00 CT TANZANITE & DIAMOND RING: Fine blue 3.00 CT cushion cut tanzanite sits and a single tier diamond bezel with diamonds draping down the shoulders if this platinum ring, 48 diamonds approx .44 CTW. Size 7. Weight 4.80 grams. Sold with current Florida Diamond Appraisers GIA graduates appraisal for $4850. Est. $2500/5000**