... grade to higher grade: RVD, CSD, MBD. Higher grade synthetic diamond grits has better crystal shape, better diaphaneity, stronger mechanical retention ... , lower impurity, higher compact strength and thermal stability. Synthetic diamond grit sizes range cover 2.2mm, 2.0mm, 10/12 ... cemented carbide, ceramics, optical glass, gems and electronic parts. Diamond micron powder sizes cover 0-0.25, 0-0.5 ...