... higher grade: RVD, CSD, MBD. Higher grade synthetic diamond grits has better crystal shape, better diaphaneity, stronger mechanical ... 400/500, 500/600, 600/700, 700/800 Diamond micron powder is ultra fine and super hard material, which is ... carbide, ceramics, optical glass, gems and electronic parts. Diamond micron powder sizes cover 0-0.25, 0-0.5, 0 ... -54, 40-60, 50-70, 54-80 Synthetic diamond powder