The micro powder is a very fine powder of diamond with grain size in micron level. It is made from synthetic diamond and classified by the size range below 54 microns (0~0.5, 0~1, 0.5~1, 0.5~1.5, 0~2, 1.5~3, 2~4, 2.5~5, 3~6, 4~8, 5~10, 6~12, 8~12, 10~20, 12~22, 20~30, 22~36, 36~54micron and etc). It is the ideal abrasives for polishing hard materials such as tungsten carbide, ceramic, gemstone, optical glass.