You don't have to pay attention to what the master cuts anywhere. The cutting of this medium-priced low-dispersion, low-refraction gem can't affect its value (India once accounted for one-third of the world's tanzanite cutting, but no country in East Asia cut a lot, and Tanzania banned the sale of tanzanite raw stone to India).

In essence, Tanzanian blue still belongs to zoisite. The primary color of most Tanzanian blue in the market is not blue, but ugly brown-green, but blue-purple after high temperature treatment (Tanzania itself was discovered after fire, that is, natural heating), just like Topaz, belonging to the vast majority of color-changing gemstones (even if an appraisal certificate is issued, because heat treatment accounts for 99%, the default certificate does not indicate whether there is heating). In addition, its hardness is low, only 6.5, which is very easy to wear. In fact, several jewelers, such as Tiffany's, have speculated that this situation is caused (it is rumored in the industry that the T family has taken over all the big mines in Tanzania, so the price of raw stone is his main control). As for less and less ... Hehe, zoisite is nothing valuable, neither Tanzanian nor Kenyan.

The bright color, low hardness and newly hyped gems obtained after heating are already the prelude to taking medicine. I think it is necessary to question the long-term value preservation in the future. Of course, it does not rule out the possibility that a small white buyer will push up the price of Titanic for more than ten years, but an old-fashioned person like me always thinks that Tanzanian blue is a gem used to match clothes! So if you like the blue and purple of Tanzania very much, it is ok to buy it and wear it for fun. The retail market price of 380USD per carat is not expensive (the best in the mining area is above RMB 0/000 per carat/kloc), but it's still a little high now, but it's better to buy a colored stone of RMB 2,300 per carat ... it's better to spend 20 yuan on a synthetic sapphire, and the rest of the money can be used to buy ground chickens or dozens of tonic pieces.