Tanzanite 28.76ct ALGT Report Number 01235531 Shape: Oval Mixed Cut No. of Stones: 1 Color (Transparency): Deep Purplish Blue (Transparent) Treatment: Tanzanite is commonly heated at low temperatures. Indication of oiling present. Additional information: Highly magnified pictures taken with a macro lens intended to show any imperfections less visible to the naked eye. Refer to the measurements for actual size