Tourmaline generally refers to tourmaline, which can reach the jewelry level. Tourmaline is a borosilicate crystal, which can contain elements such as aluminum, iron, magnesium, sodium, lithium and potassium.

Chemical composition: (na, k, ca) (al, Fe, Li, mg, Mn) 3 (al, Cr, Fe, v) 6 (bo3) 3 (si6o 18) (oh, f) 4.

Optical properties: anisotropic body, uniaxial crystal, negative optics; Polychromaticity: medium to strong, with different body colors; Ultraviolet fluorescence: generally none; Pink tourmaline: reddish to purple under long and short waves; Absorption spectrum: red and pink tourmaline: green light absorption band is wide, sometimes narrow band of 525nm, and absorption lines of 45 1 nm and 458 nm can be seen; Blue and green tourmaline: it has universal absorption in red region and strong absorption band at 498nm.

Maintenance: put it in the jewelry box when not in use, and don't let tourmaline jewelry and other jewelry collide with each other; Tourmaline itself is brittle and afraid of breaking. Try not to wear tourmaline gems during strenuous exercise or heavy work. It is a good habit to check and repair your jewelry regularly; Avoid collision when wearing tourmaline jewelry, because the tourmaline jewelry inlaid in this way is very beautiful; Don't wash with high-temperature water for a long time, it will discolor tourmaline if it is too hot.

Efficacy: tourmaline contains energy, has a calming effect, can make people concentrate, and changeable colors can stimulate ideas and creativity; Tourmaline can emit a magnetic field with strong affinity, which can eliminate the diaphragm between people.