... crystal face,high compression strength synthetic diamond 1.Usage:lapping, grinding and polishing of optical objects, magnet heads, ... Conventional lapping, grinding and polishing of optical objects, magnet heads, gems and electroplated articles. Diamond micron powder :Grit:0 ... , 40-60 ,50-70 ,60-80 Synthetic diamond RVD: 30/35,35/40,40/45,45/50 ... made as per customers'requirement Synthetic Diamond -Yellow