Jasper 152x25x5 mm (on the form) Markdown

Yashma (Orsk), Kazakh-Chikkan deposit. The jasper of this deposit is especially appreciated by sharpening specialists due to its uniformity, fineness and speed of work. The rock has a cryptocrystalline groundmass structure. Composed mainly of quartz (up to 80-90%), chlorite (up to 15-10%), epidote, ziosite and clayey substance

The bar is brought to the base state on F400 Silicon Carbide powder.