Profile: J & M Diamond Tool, Inc. specializes in the design & manufacture of diamond tools, which includes polycrystalline diamond, cubic boron nitride and natural diamond tooling. We deliver diamond dressers, PCD & CBN tipped inserts, diamond scribers, diamond engravers and other abrasive products. Our PCD & CBN product includes boring tools, turning tools, form tools routers & cutters, end mills and grooving tools.