The lapis lazuli is an opaque or translucent semi-precious stone of blue, blue-purple or blue-green. It is a rare gems. The ancient lapis lazuli in ancient China is a symbol of the majesty of heaven. In ancient Egypt thousands of years before BC, lapis lazuli was of equal value to gold.
The origin and origin of lapis lazuli
The lapis lazuli is formed by contact metamorphism and mainly occurs in silicate-magnesium skarn and calcareous skarn.
The lapis lazuli is mainly a semi-precious stone composed of a variety of minerals such as azure, sodalite, blue smectite, pyrite and calcite. The golden point-like substance on the lapis lazuli is actually pyrite. The white cloud-like structure is calcite. The ancient jewels in Egypt and the Middle East are often seen as jewels made of lapis lazuli, and even considered by the Egyptians to be a holy stone.
Due to the different proportions of the constituent minerals, the color and texture of lapis lazuli will be slightly different. The body blue of lapis lazuli varies in shades depending on the place of origin, mainly determined by the proportion of blue minerals and white calcite. The texture on it has a golden yellow spot formed by pyrite or a white grain formed by white calcite. In general, the body color of the superior lapis lazuli is moderate and saturated blue. At the same time, it is more popular with the golden spot on it.
The main producing areas of lapis lazuli are Afghanistan, the United States, Mongolia, Myanmar, Chile, Canada, Pakistan, India and Angola. No lapis lazuli deposits have been found in mainland China.
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