| General Information |
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| Chemical Formula | Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Physical Properties of Magnetite |
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| Mohs Hardness | 5.5 to 6.5Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Specific Gravity | 4.90Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Tenacity | BrittleGemdat.org, Management Team (2012) |
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| Cleavage Quality | GoodGemdat.org, Management Team (2012) |
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| Fracture | Uneven,IrregularGemdat.org, Management Team (2012) |
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| Optical Properties of Magnetite |
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| Refractive Index | 2.42Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Optical Character | IsotropicUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Colour |
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| Colour (General) | BlackUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Transparency | OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Lustre | Metallic,SubmetallicGemdat.org, Management Team (2012) |
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| Crystallography of Magnetite |
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| Crystal System | IsometricUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Further Information |
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| Mineral information: | Magnetite information at mindat.org |
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