Lazuli (English: lazurite [1] or Lapis lazuli, from Latin) was called Qiulin, Jinjing, Jinyu, Qingdai, etc. in ancient China. Buddhism is called Fei Nuli or Bi Liuli, which is one of the witnesses of the cultural exchange between the East and the West in ancient times. According to the data, lapis lazuli was introduced to China from Afghanistan through the "Silk Road" [2] . It is usually produced in aggregates, with a dense block-like and granular structure. The colors are dark blue, purple blue, sky blue, green blue, etc. Lapis lazuli is also the main raw material for natural blue pigments.
In the selection of lapis lazuli, the color is uniform without cracks, the texture is fine and there is no Venus, and no white gold is second, and the gold is evenly distributed. If the content of pyrite is low, no gold stars on the surface will not affect the quality. However, if the Venus color is black, dull, or if the calcite content is too high to form large white spots on the surface, the value is greatly reduced.
Lapis Lazuli helps people identify mental stress and bounce the energy of stress back into place, inspiring personal strength and spirit. In terms of communication, lapis lazuli can promote communication, improve communication and expression skills, eliminate anger and conflict, and is the stone of friendship. Lapis lazuli has many functions, and it also helps people to heal spiritual wounds.
