| General Information |
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| A variety or type of: | Talc |
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| Other Names/Trade Names: | |
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| Chemical Formula | Gemdat.org, Management Team (2012) |
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| Physical Properties of Steatite |
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| Mohs Hardness | 1Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Specific Gravity | 2.20 to 2.80Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Cleavage Quality | PerfectUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Optical Properties of Steatite |
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| Refractive Index | 1.539 to 1.596Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Optical Character | Biaxial/-Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Birefringence | 0.046 to 0.050Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Colour |
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| Colour (General) | White, yellowish, greenish, greenish-brown, reddishUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Transparency | OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Lustre | GreasyArthur Thomas, Gemstones (2009) |
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| Crystallography of Steatite |
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| Crystal System | MonoclinicUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Habit | MassiveArthur Thomas, Gemstones (2009) |
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| Further Information |
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| Mineral information: | Steatite information at mindat.org |
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