Round 0.83 ct TanzaniteTanzanite Description Measurements Custom Jewelry This is a vivid blue violet colored round brilliant Tanzanite gemstone with very good grade cutting. With it's nearly one carat size, this round gemstones makes an excellent center stone for a petite custom Tanzanite ring or pendant. One . 83 carat round brilliant cut tanzanite from Tanzania, Blue violet vivid color, VS clarity, cut grade VG, measuring 6 mm wide, 6 mm long, 3. 7 mm deep. Heat treated