Features 1、Fine grinding and polishing, mirror effect, 3000 mesh ruby +10000 mesh natural green jade double sided sharpening stone. 2、The whetstone is a natural green jade whetstone, which is naturally formed by nature, and the color is translucent. 3、With natural colors, the texture is very fine and uniform, the hardness is high, and it is not easy to wear. 4、Ruby Whetstone is sintered at high temperature and has high hardness and strength. 5、The whetstone is rich red in color, with delicate and tight knots, portable and compact, take it and use it. Specification Item Type: Whetstone Material: Natural Green Jade + Ruby Roughness: 3000 Mesh +10000 Mesh Purpose: Industrial Tool Grinding Package List 1 x Whetstone