4.28ct CERTIFIED 100% Natural Violet Blue TANZANITE $4922.00D'Block MineGems Type 100% NATURAL TANZANITEApprox Weight 4.28 CtsGems Shape OVAL CUTGems Size 11.07 X 9.15 X 6.03 MM Gems Color VIOLET BLUEGems Clarity -TIPE 1 FLAWLESSOrigin TANZANIA Gems Hardness 6.5-7.0 Quantity 1 Treatment None-UNTREATEDLuster Top Glittering