Specific Gravity and Hardness of Common Minerals
Measured on a scale of - Specific Gravity 1-20 Hardness 1-10
Arsenopyrite 6 - 6.2 5.5 - 6
Calcite 2.7 2.5 - 3
Chalcopyrite 4.1 - 4.3 3.5 - 4
Chromite 4.6 5.5
Cinnabar 8.10 2.5
Copper 8.9 2.5 - 3
Diamond 3.5 10.0
Epidote 3.3 - 3.6 6 - 7
Feldspar 2.4 - 2.8 5.5 - 6.5
Galena (Lead) 7.4 - 7.6 2.5
Garnet 3.5 - 4.3 6.5 - 7.5
Gold 15.6 - 19.3 (19.3 when pure) 2.5 - 3
Graphite (Pencil Lead) 2.2 2.0
Hematite (Iron) 4.9 - 5.3 5 - 6.5
Ilemenite 4.5 - 4.7 5 - 6
Lead 11.3 1 - 2
Limonite 2.7 - 4.3 4 - 5.5
Magnetite (Iron) 4.9 - 5.2 5.5 - 6.5
Marcasite 4.89 6 - 6.5
Mercury (Quicksilver) 13.6 liquid
Mica 2.7 - 3.4 2 - 3
Monazite 4.6 - 5.4 5 - 5.5
Olivine 3.2 - 4.3 6.5 - 7
Platinum 14 - 19 4 - 4.5
Platinum (Refined) 20.0 4.5
Pyrite 4.9 - 5.2 6 - 6.5
Pyroxene 3.2 - 3.9 5 - 7
Quartz 2.65 7
Rutile 4.2 - 4.3 6 - 6.5
Scheelite 5.9 - 6.1 4.5 - 5
Silver 10 - 12 (10.5 when pure) 2.5 - 3
Tourmaline 3.0 - 3.25 7 - 7.5
Turquoise 2.6 5.5
Wolframite 7.0 - 7.5 4 - 4.5
Zircon 4.6 - 4.7 7.5