Jade is generally divided into two categories, namely nephrite and jadeite. 1. Nephrite: (a) Origin: There are many places in China, and the white jade in Xinjiang is the most famous; (b) Color: dark, light green, white, milk yellow, etc.; © variety: white jade, Xiuyan jade, sapphire; (d) Appearance gloss: grease light; (e) Products: carvings, bracelets, pendants, accessories, etc. 2. Hard jade (emerald): Generally referred to as Burmese jade jade, because the main producing area is in Myanmar. (a) Origin: In Myanmar, it is called a rock in the mountains and a water stone in the bottom of the river; (b) Color: green, purple, red, yellow, black, white, etc.; © variety: old pit, glass, ice, bean green, oil green, white blue, hibiscus, dry green and new pit; (d) Appearance gloss: secondary glass light; (e) Products: bracelets, carvings, pendants, bead chains, flower pieces, etc. Losing the original color will even cover up some embarrassment. The so-called "beauty under the lamp" is the reason L Type Sphere,L Type Regulating Flow Sphere,L Type Sphere For Ball Valve,Regulating Flow Sphere Ball Valve Antong Valve Co.,Ltd , https://www.atvalveball.com