| General Information |
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| Other Names/Trade Names: | |
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| Chemical Formula | Michael O’Donoghue, Gems, Sixth Edition (2006) More from other references |
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| Physical Properties of Pyrite |
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| Mohs Hardness | 6 to 6.5Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Specific Gravity | 5.00 to 5.20Walter Schumann, Gemstones of the world (2001) More from other references |
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| Tenacity | BrittleWalter Schumann, Gemstones of the world (2001) |
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| Cleavage Quality | IndistinctWalter Schumann, Gemstones of the world (2001) More from other references |
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| Fracture | Uneven,ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references |
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| Optical Properties of Pyrite |
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| Refractive Index | Cannot be determinedWalter Schumann, Gemstones of the world (2001) More from other references |
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| Optical Character | IsotropicUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Birefringence | NoneWalter Schumann, Gemstones of the world (2001) |
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| Pleochroism | AbsentWalter Schumann, Gemstones of the world (2001) |
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| Dispersion | NoneWalter Schumann, Gemstones of the world (2001) More from other references |
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| Colour |
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| Colour (General) | Brassy yellow to silverHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Transparency | OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Lustre | MetallicUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Fluorescence & other light emissions |
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| Fluorescence (General) | NoneWalter Schumann, Gemstones of the world (2001) |
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| Crystallography of Pyrite |
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| Crystal System | IsometricHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Habit | Pyritohedral, octahedral, penetration and contact twins and granular and stalactitic
masses are also commonMichael O’Donoghue, Gems, Sixth Edition (2006) More from other references |
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| Geological Environment |
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| Where found: | Pyrite forms under a number of different conditions and in many different rock types.Michael O’Donoghue, Gems, Sixth Edition (2006) |
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| Further Information |
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| Mineral information: | Pyrite information at mindat.org |
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| Significant Gem Localities |
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| Myanmar | | |
| Ted Themelis (2008) Gems & mines of Mogok | |
| Ted Themelis (2008) Gems & mines of Mogok | |
| Ted Themelis (2008) Gems & mines of Mogok | |
| Ted Themelis (2008) Gems & mines of Mogok | |
| Ted Themelis (2008) Gems & mines of Mogok | |
| Ted Themelis (2008) Gems & mines of Mogok | | Peru | | |
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