15.27 Carat Blue TANZANIAN Oval Tanzanite GWLAB

This 15.27-carat tanzanite is an oval-cut stone of blue coloration sourced from Tanzania. The stone has been heated, a standard treatment for tanzanite to enhance and stabilize its color. It is offered as a loose stone and has been examined by GWLAB. The specimen represents a substantial size for this relatively rare gemstone, which is primarily mined in the Merelani Hills region of Tanzania.