ALGT COLORED STONE IDENTIFICATION REPORT IDENTIFICATION Species ......................................................................................................... Natural Zoisite Variety ..................................................................................................................... Tanzanite DESCRIPTION Shape & Cutting Style ....................................... Rectangular Cushion, Mixed Cut Measurements .................................................................... 14.82 x 10.94 x 7.75 mm Carat Weight ................................................................................................... 10.79 Carat Color ...................................................................................................... Vivid Purplish Blue Transparency .................................................................................................. Transparent ADDITIONAL GRADING CHARACTERISTICS Color Quality Grade .......................................................................... Fine Color Quality Origin ......................................................................................................................... Tanzania Origin determination is an expert opinion based on microscopic examination, spectroscopic features and chemical trace element analysis. 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 clarity enhancement in fissures at the time of testing. Clarity enhancement has become a common practice in trade for many gemstones. This enhancement is reversible at any time. 07 February, 2026 62006621