13.31 Carat Blue TANZANIAN Trilliant Tanzanite GWLAB

This 13.31-carat tanzanite is a blue trilliant-cut stone from Tanzania that has been heat treated, a standard practice for tanzanite to enhance and stabilize color. The specimen is offered as a loose stone and accompanied by certification from GW Lab. Tanzanite's pleochroic nature means the color appearance may shift depending on viewing angle. The trilliant cut maximizes the stone's color saturation across its three-sided faceted profile.