Most of the tea crystals seen in the market have no impurities. Later, I asked people in the industry, and there are two kinds of opinions: 1. It's natural, because it's mined in large quantities, and it's almost like white crystal, which is basically the kind of crystal without impurities, so most of the colors are better. It is said that 90% of tea crystals on the market are dyed at high temperature, and I don't know how to operate them. Therefore, the tea crystals we see are generally only a few tens of dollars for a bracelet, which is very cheap. But as for the big ornaments, I really can't see them. If you really like it, you can invite it first and then take it for identification. If the appraisal result is not satisfactory, take it back. Because I didn't see the real thing, the price is hard to say.