What's the difference between lapis lazuli and Uruguayan lapis lazuli?

The difference between Blackstone and Blackstone in Uruguay;

1, different materials. Uruguayan lapis lazuli is granite, and the waste is in the shape of big bedrock (the stone is stable, and there are almost no problems such as cracking, white gall and sweeping flowers); Lapis lazuli is basalt, and the waste material is in the shape of rolling stones (because each rolling stone is small, and a weathered layer will be formed on the surface of the rolling stone, the color of the weathered layer is yellow, which is quite different from the black of the stone core, and it is prone to problems such as line cracking, sweeping flowers and double colors. Lapis lazuli, on the other hand, is full of white scabs, which will turn into holes once it is sandblasted or meets sharp tools.

2. Different places of origin. Uruguayan lapis lazuli is produced in Uruguay, while Uruguayan lapis lazuli is produced in China, Inner Mongolia and Viet Nam.

3. Different materials. Uruguay Blackstone has higher hardness, higher density and lower thermal expansion coefficient than Blackstone. After Uruguay Blackstone tea tray is used in tea tray, it has the following obvious characteristics compared with Blackstone tea tray:

A. It can greatly reduce the probability of transportation damage and scratches in use (high hardness).

B. It is much more convenient to clean tea stains (high density and low water absorption). In addition, due to the high material density, the brightness of the polished surface is much higher than that of lapis lazuli.

C. The thermal expansion resistance is much higher than that of Blackstone.

In the market, Uruguayan black stone is used as tea tray, only the exclusive stone with stone-free design, and the others are ordinary black stone.