Pink gemstones
Hardness. Specific Gravity.
Beryl 7-3/4 2.709-2.810
Diamond 10 3.502-3.564
Ruby 9 4.073-4.080
Spinel 8 3.614-3.654
Topaz (“burnt” or “pinked”),
8 3.500-3.520
Tourmaline 7-1/4 3.024
