ALGT COLORED STONE IDENTIFICATION REPORT IDENTIFICATION Species ......................................................................................................... Natural Zoisite Variety ..................................................................................................................... Tanzanite DESCRIPTION Shape & Cutting Style ......................................................................... Oval, Mixed Cut Measurements .................................................................... 16.69 x 13.21 x 9.43 mm Carat Weight ................................................................................................... 16.76 Carat Color ................................................................................................... Vivid Blue (Purplish) Transparency .................................................................................................. Transparent ADDITIONAL GRADING CHARACTERISTICS Color Quality Grade .......................................................................... Fine Color Quality Suggested Origin ................................................................................................. Tanzania COMMENTS Tanzanite is commonly heated at low temperature to improve its color. There is currently no scientific method available to determine whether this gemstone has been enhanced or not. Minor amount of oil in fissures. Oiling in emeralds is a common practice in trade. This enhancement is reversible at any time. 31 May, 2024 72635453