1, the most important thing to distinguish Bian Shi is to look at the chemical element analysis, which is what we often call the test report.
The main component of natural ochre is a mineral called "microcrystalline limestone", in which strontium oxide and calcium oxide are the most, followed by silicon oxide and sodium oxide, as well as aluminum, iron, magnesium, phosphorus and other elements. Trace elements and rare earth elements contain more than 36 kinds of elements beneficial to human body, such as chromium, manganese, nickel, copper and yttrium, and the content of radioactive substances is very small.
At the same time, some bian stone contains copper, iron and other metal substances, which makes bian stone appear red, yellow and green.
2. Look at the stone structure in Bian Shi.
Bian Shi is a pure natural health care tool, which is hand-polished by natural silk cotton from Bian Shi. When it is broken or crushed, its fracture surface will show the true color of natural stone, and the dense structure of stone can be clearly seen. In addition, the hardness of stones used to make stones is relatively fragile, softer and more fragile than ordinary stones. Scratching with a hard object will produce clear marks.
3. Look at the luster
Spin kerbstone has fine surface, high polishing degree and small mineral crystal size, about 0.03 mm In addition, the test report of mineral crystal size should be clearly seen when buying.
Judging from the sound of knocking on the stone.
The sound of Bian Shi grinded by Xibin Bian Shi is more like the sound of metal, more crisp and continuous, so there is a saying that the sound of gold is like jade, and the sound of other stones is like the sound of gongs and drums, which is dull and short-lasting.
5. Judging from the feeling of feeling the stone.
Pseudo-bian stone is mostly made from ore obtained by mining, and the feeling in hand is cold from the inside out; Spin Bian Shi belongs to the pumice on the earth's surface, which has the characteristics of "fine, clean, warm, moist, greasy and condensed". It absorbs heat quickly and dissipates heat slowly, which is one of the reasons why it can be used as a tool for thermotherapy.
Excavation process
1978, 13 pieces of Spencer's films in the Spring and Autumn Period were unearthed in East China, and two of them were damaged, which inspired the members of the Chinese National Orchestra Society in Shandong to continue looking for this kind of stone. In the mid-1980s, a rare floating piece in Sibin, which had been lost for two thousand years, was discovered.