Large 254.84ct Unheated Gem Tanzanite CrystalThis outstanding blocky Tanzanite crystal has natural and unheated color. We contemplated on cutting this beauty up because it has a few great clean areas towards the termination of the crystal. Our gem cutter estimates that it could possibly cut three very clean stones that weigh around: a 13 carat, 4 carat, and and a 2 carat. They might not be the top top color, but if finished they will produce beautiful lighter gemstones when heated. That being