← All SG Values

GemstoneSG RangeRI RangeCrystal SystemHardness
Moldavite2.32 – 2.381.480 – 1.510Amorphous5.5
Hackmanite2.14 – 2.401.483 – 1.487Cubic5.5–6
Sodalite2.14 – 2.401.483 – 1.487Cubic5.5–6
Obsidian2.30 – 2.601.480 – 1.510Amorphous5–5.5
Chrysocolla2.00 – 2.401.460 – 1.630Amorphous2.5–7
Try GemID Free →