For grinding all types of ceramics including zirconia, also works on metal alloys and carbide. Diamond Abrasive - Suitable for a vast range of grinding applications,. Sintered Komet®, this abrasive features interspersed diamonds and are manufactured with a special ceramic bond that allows them to be effectively applied on veneering and pressed ceramics as well as on extremely resistant oxide ceramics such as zirconium oxide. The abrasives also can be readily employed on hard metals, alloys and carbide.