Fluorite: Also known as "fluorite", the color is often green, purple, blue, yellow and red. The origin of fluorite is a fluorite mineral produced by geological interaction between hydrogen fluoride and calcium carbonate (limestone) in underground hydrothermal solution. China is rich in fluorite resources, and its geological reserves are second only to Mexico, ranking second in the world. In recent 10 years, fluorite with phosphorescence effect has been found in northern Guangdong, Henan, Inner Mongolia, Xinjiang, Hunan and other places, and some of them have been ground into spherical "night pearls" and sold to Beijing, Shanghai, Guangzhou, Hong Kong, Taiwan Province, Southeast Asia, Africa and other places.
Apatite: a natural calcium phosphate mineral, colorless and transparent, usually in light yellow, yellow-green, grayish purple, crimson, grayish black and other colors. When apatite is heated, various colors of phosphorescence will appear. High-quality transparent apatite can be used as a medium-grade gem. China's apatite is mainly produced in Xinjiang, Inner Mongolia, Hebei, Gansu, Yunnan, Henan and other places.
Scheelite: calcium tungstate mineral, transparent, colorless, gray, light yellow, reddish, grayish green, lavender and other colors, with glass and diamond luster. Synthetic scheelite is often used in diamonds and substitutes. Scheelite has Luo Qiang phosphorescence after heating and ultraviolet irradiation. China is rich in scheelite resources, mainly produced in Hunan, Jiangxi and Fujian provinces, but few are suitable for gem and luminescent stone.
Diamonds: Natural diamonds are the only minerals composed of carbon (C) in nature. They are colorless and transparent, with light yellow, green, red, purple and grayish black. Colorless, transparent and flawless diamonds are the most precious diamonds in jewelry. Diamonds exposed to sunlight emit bright blue-green phosphorescence. Diamonds in the world are mainly produced in Australia, Zaire, South Africa and other countries. Diamonds in China are mainly produced in Liaoning, Shandong, Hunan, An Wei and other places.
200- 1280 yuan