Price Mistake? Violet Blue Trilliant Tanzanite Gemstone 3.66 Carats Massive 50% Savings [SlJ9GPeN]

One 3.66 carats trilliant cut tanzanite, vBE color (20%/80%), FLAWLESS TO VVS clarity, cut grade very good, measuring 9.9 mm wide, 10 mm long, 6.4 mm deep; with very good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 64%, table width 55%.  Tanzanite is color enhanced by heating.