1 class is carved from natural rough stone, showing different colors due to different places of origin. For example, the medical stone in Shandong is gray with big spots, like terrazzo floor, which feels rough and can only be made into simple cups, which are also thick and rarely carved; There are also grey medical stones produced in Heilongjiang, green and yellow medical stones produced in Inner Mongolia, especially medical stones produced in Tongliao, Inner Mongolia, which are of good quality and hard texture, so there are many carving styles and they are beautiful to make.
The second kind is made of medical stone powder, which is made, but it is rare in the market. The effect is similar to that of purple sand, with high price and low price.
As for China's medical stone chips and cement, I have never seen them. Stone chips+cement = concrete. If there is such a cup, it should be easy to see. So I personally feel that it should be a rumor. Most of the cups on the market are carved from the original stone of Chinese medical stone, just because of different origins and different colors.