The diamond paste is a product intended for initial and final grinding, polishing and lapping of flat, as well as conical, spherical or cylindrical surfaces. 

It is a special suspension of diamond grain, which has a high percentage of diamond in the paste. The grain is placed in a semi-liquid medium, which in the case of SD diamond pastes is a water-oil or oil connector. The SD diamond paste is oil-soluble, and thanks to a special recipe it maintains durability and effectiveness even with greater heat release. It can be used for both manual and machine processing of objects made of such materials as ceramics, alloy and hardened steel, cemented carbide or semiconductor materials. It is also sometimes used to clean jewellery. The concentration of diamond grain in the paste depends on how hard and large the treated material is. The degree of polishing of the surface depends on the type of diamond paste used. In order to achieve a mirror effect on a polished surface, manufacturers and specialists recommend the use of pastes with a high oil content.