... with smooth crystal face,high compression strength synthetic diamond 1.Usage:lapping, grinding and polishing of ... objects, magnet heads, gems 2.Better shape&purity synthetic diamondCharacteristics: shape and purity after multiple treating measures. ... 30-40, 40-60 ,50-70 ,60-80 Synthetic diamond RVD: 30/35,35/40,40/45,45/50,50 ... be tailor-made as per customers'requirement Synthetic Diamond -Yellow