A rare natural color tanzanite with a rough weight of 10.80 carats. I am thinking this will be emerald cut or cushion shape. The rough has one shallow end which will affect the final yield. The finished tanzanite is a barion style emerald cut measuring 10.6 x 8 x 6.2 millimeters. The tanzanite has an excellent cut and AAA violet blue vivid color. This is an eye clean S12 clarity having a feather type inclusion at the edge near one corner. Price is adjusted downward $150 per carat for this flaw.