| General Information |
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| A variety or type of: | Obsidian, which is a variety of Glass |
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| Physical Properties of Sheen Obsidian |
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| Mohs Hardness | 5 to 5.5Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Specific Gravity | 2.33 to 2.50 +Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Fracture | ConchoidalArthur Thomas, Gemstones (2009) |
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| Optical Properties of Sheen Obsidian |
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| Refractive Index | 1.450 to 1.550Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Optical Character | IsotropicArthur Thomas, Gemstones (2009) |
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| Colour |
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| Colour (General) | Black, brown with golden sheenUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Transparency | Transparent,Translucent,OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Lustre | VitreousArthur Thomas, Gemstones (2009) |
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| Crystallography of Sheen Obsidian |
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| Crystal System | AmorphousHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Habit | MassiveArthur Thomas, Gemstones (2009) |
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| Further Information |
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| Mineral information: | Sheen Obsidian information at mindat.org |
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