Kebo garnet has a high Moh's hardness of 7-8, melting point of 1,250-1,315oC, wide size range ... Kebo garnet has a high Moh’s hardness of 7-8, melting point of 1,250-1,315oC, wide size ... in water and an acid solubility of less than 1%, free of silica content and highly resistant to ... physical attack. These characteristics determine our garnet’s has wide ...