Polycrystalline Diamond paste is an abrasive compound that consists of numerous crystal diamond particles suspended in an oil binder. Compared to traditional diamond pastes, polycrystalline diamond paste contains multiple cutting surfaces per particle, which speeds up the preparation process and reduces deformation. The oil base effectively retains diamond particles, resulting in longer-lasting use. The polycrystalline diamond paste oil base is suitable for polishing heat and water-sensitive materials.