18.02 Carat Blue TANZANIAN Round Tanzanite GWLAB

This 18.02 carat tanzanite is a round brilliant cut stone of blue color origin from Tanzania. The stone has been heat treated, a standard treatment for tanzanite that improves color stability. It is a loose stone, unset, and accompanied by a GWLab certificate. At this carat weight and in round form, the stone presents a substantial specimen for either collector interest or jewelry setting.