| General Information |
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| A variety or type of: | Garnet Group |
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| Varieties/Types: | |
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| Chemical Formula | Arthur Thomas, Gemstones (2009) |
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| Pyrope Simulants |
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| Imitations are made with red glass. - Gemstones of the world, Walter Schumann, 2001, p 104 |
| Physical Properties of Pyrope |
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| Mohs Hardness | 7 to 7.5Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Specific Gravity | 3.62 to 3.87Walter Schumann, Gemstones of the world (2001) More from other references |
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| Tenacity | BrittleAnthony et al, Handbook of mineralogy (2001) |
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| Cleavage Quality | IndistinctWalter Schumann, Gemstones of the world (2001) More from other references |
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| Fracture | ConchoidalArthur Thomas, Gemstones (2009) |
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| Optical Properties of Pyrope |
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| Refractive Index | 1.720 to 1.756Walter Schumann, Gemstones of the world (2001) More from other references |
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| Optical Character | IsotropicHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Pleochroism | AbsentWalter Schumann, Gemstones of the world (2001) |
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| Dispersion | 0.022Arthur Thomas, Gemstones (2009) |
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| Colour |
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| Colour (General) | Red, brownish-redUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Causes of Colour | Brownish-red, Fe2+ in distorted cubic coordination. Red, Fe2+ in distorted cubic site plus Cr3+ in octahedral coordination. Color change (in pyrope and pyrope-spessartine), V3+ and/or Cr3+ in octahedral coordinationW. William Hanneman, Pragmatic Spectroscopy For Gemologists (2011) |
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| Transparency | TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Lustre | VitreousArthur Thomas, Gemstones (2009) |
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| Fluorescence & other light emissions |
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| Fluorescence (General) | Mostly noneWalter Schumann, Gemstones of the world (2001) |
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| Crystallography of Pyrope |
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| Crystal System | IsometricHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Habit | Rare in crystal formArthur Thomas, Gemstones (2009) More from other references |
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| Geological Environment |
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| Where found: | In ultramafic rocks, as peridotites, kimberlites, eclogites, serpentinites, and in "hornblende"-garnet-plagioclase rocks and anorthosites. Also in amphibole and biotite schists, and as a detrital mineral.Anthony et al, Handbook of mineralogy (2001) |
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| Inclusions in Pyrope |
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| Low-relief rounded crystals (such as apatite and zircon), acicular crystals - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 3 |
| Further Information |
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| Mineral information: | Pyrope information at mindat.org |
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| Significant Gem Localities |
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| China | | |
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| | | Czech Republic | | |
| Zang and Gilg (2008) | | Kenya | | |
| Barot (1993) | | Kyrgyzstan | | |
| | | Madagascar | |
- Color-changing Garnet Mining Field
| Henn (1999) | | Mongolia | | |
| Dill et al. (2004, 2006) | | Russia | | |
| P. Lyckberg (2009) | |
| P. Lyckberg (2009) | | Sri Lanka | | |
| Milisenda and Henn (1999) | |
| Chandrajith et al. (1998) | |
| Chandrajith et al. (1998) | | Zambia | | |
| Johnson et al. (1999) |
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