Hi I do not know much about Tanzanite , but i have seen stones like these in the last few weeks on Ebay ( ya I know ) going at action for over 2k . Same cut style and size.Let us hope these are real bids not just shills, just to run up the price in the market. But it feels to me like their may be a lot of this size materiel out there being put on the market.some one is selling their non investment med level stock now the prices are up . Ps this is not to say the stones you bought are not a good buy. Just my opinion of the market.