... . irregular crystals shape 3. color is yellow Description:RVD diamond grit feasures good self-shapening and strong mechanical retention,widely used ... bruting,gem stone cutting and synthetic diamond tools ,RVD diamond grit is the ideal industrial diamond grain for resin bond diamond ... glasses, non-ferrous metals, precious and other hard materials.Available grit:325/400,270/325,230/270,200/230,170/200 ...