Garnet sand A) Used for polishing B) Hardness is high C) HIgh strength Garnet Sand is natruel goods that used for polihing abrasivesGarnet Sand is also known as "Jade sand" or "natural carborundum" has strong hardness and good acid-alkali resistance, is an island structure, aluminum (calcium) silicate, which color more beautiful, Currently, the high-purity magnetic elected in gray, red, green, ...