... 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 ...