Day: August 27, 2026

The polishing process for agate and jade is as follows: 320-grit black silicon carbide (coarse grinding) → 600-grit black silicon carbide (medium grinding) → subsequent fine polishing →  white aluminum oxide 2000mesh for polishing. For rough and medium grinding of jade and agate, 320# and 600# black silicon carbide (Mohs hardness 9.2) are typically used. Its sharp edges and strong cutting force result in high grinding efficiency. Fine polishing uses fine-grained alumina polishing powder as a polishing agent.