Spessartine Garnet
Spessartine
– Mn2+3Al2(SiO4)3
Quartz
Talc (1)Diamond (10)
Very hard. Scratches glass and steel.
Did you know?
Spessartine is one of the garnets, and garnet is not only a gem but a workhorse abrasive. Crushed garnet is the grit on garnet sandpaper and the sharp sand fired in waterjet cutters that slice through steel. The same family of crystals prized in a ring is, ground up, tough enough to cut metal.
