2. Different compositions: Different bian stone contains different compositions. The main component of natural bian stone is a mineral called microcrystalline limestone, in which strontium and calcium oxide are the most abundant, followed by silicon oxide and sodium oxide, so different bian stones also have different material components.

3. Different uses: bian stone is a stone medical tool, black bian stone is mostly used for scraping and medical purposes, while red bian stone has a strong decorative effect and is mostly used for making handicrafts or jewelry.

Matters needing attention in the use of bian stone

As far as users of bian Shi are concerned, not everyone is suitable. For pregnant women and menstruating women, it is necessary to use it with caution or follow the doctor's advice. During pregnancy or menstrual period, women are in unstable physical condition and weak constitution. At this time, it is necessary to pay attention to the strength of manipulation and taboo parts when using Bian Shi for health preservation. When there is exudation and ulceration of the skin, lithotomy can not be applied to the skin lesions, so as not to cause bacterial infection and delay the repair of the epidermis.

It is forbidden to heat the bian stone by strong stimulation methods such as boiling water and microwave oven, so as not to destroy the molecular structure of the bian stone surface. It is suggested to heat the stone in a mild way, such as heating the stone with warm water of about 50 degrees, or heating the stone with a warm water bag radiator.

Refer to Baidu Encyclopedia-Redstone and Baidu Encyclopedia-Stone.