Hard bluestone is more suitable for stone grinding. Less shedding. Medical stone belongs to volcanic rock, which contains many minerals and seems to be used as medicine. Anyway, it is said that medical stone is very powerful, but I have never heard of it used to grind stones.

Medical stone not only has good adsorption performance, but also can dissolve minerals necessary for human body, but there are also many fake and shoddy products on the market now. In the market, granite is often used as medical stone. If carefully identified, it is not difficult to see the authenticity of the product. Let's talk about how to distinguish the authenticity of medical stone with the naked eye.

The fake medical stone skin is smooth, not porous, and has many variegated colors, so it is easy to be broken when hit by heavy objects.

The real medical stone has obvious variegated structure, rough and porous appearance, and many small holes can be seen by naked eyes, mainly long and narrow particles, such as gray rice grains, from which the name of medical stone comes.

Lava erupted from the volcano is buried underground, and after high humidity and high heat in the volcanic zone, these lava are transformed into acidic substances, and finally medical stone is formed under the pressure of crustal changes. China is rich in medical stone resources, which are distributed in almost all provinces, municipalities and autonomous regions. Due to different producing areas, the effect is different.