The fluorite in the stone is also called soft water amethyst, soft water green crystal and fluorite. The colors of stones are yellow, green, blue and purple. When heated, it has glass luster and fluorescence, and the crushed stone slag can be used as the filter material in the filter. In industrial production, it is often used to smelt metal fittings and make fluoride, and can also be processed into low-grade jade. Origin: Jinhua, Zhejiang, Dean, Jiangxi, Longhua, Hebei.

Malachite in the stone is actually the tailings of copper mine, with green color and round pattern like peacock's tail on the stone surface, hence the name. The copper ions in it will slowly dissolve in water, which will help to supplement the demand of aquatic plants for copper, but it is not advisable to put too much or too much to prevent excessive copper.