11.57 Carat Blue TANZANIAN Pear Tanzanite GWLAB

This is an 11.57-carat tanzanite of blue color in a pear shape, sourced from Tanzania. The stone has been heat-treated, a standard practice for tanzanite to enhance and stabilize its color. It is offered as a loose stone and carries a report from GWLab. The specific gravity and refractive index characteristics typical of tanzanite apply to this specimen.