The origin and internal structure of dzi beads
The dzi bead, also known as the Eye of the Sky, is a rare gem, which is mainly produced in the Himalayas such as Tibet, eastern Tibet, Bhutan, Sikkim and Ladakh. Tianzhu is a kind of nine-eye stone shale, which contains jade and agate. It is one of the seven treasures, and it is recorded in the history books as a nine-eyed stone dzi bead. Tibetans still believe that dzi beads are celestial stones.
The internal structure of dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-dzi-
Tianzhu is a sedimentary rock, mainly clay-consolidated lamella rock. The colors of dzi beads can be divided into black, white, red, brown and green. The color of shale varies according to the chemical substances it contains, such as red shale containing iron oxide, yellow shale containing iron hydroxide and gray-black shale containing carbon.
The magnetic field of dzi bead is three times that of crystal, the magnetic wave of crystal is 4 volts, and dzi bead is 13 volts. The higher the hardness of the ore, the stronger the magnetic field, while the dzi bead is a semi-precious stone with a Mohs hardness of 7 to 8.5. Except for the hardness of South African diamond Mohs 10, there is no ore with stronger magnetic field than dzi beads on the earth now.
That's why only agate in Tibet is called dzi beads, but agate in Brazil, Persia, the Soviet Union, Indonesia and Taiwan Province Province can't be called dzi beads. However, any ore has a magnetic field, but the intensity is different.