General Information |
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A variety or type of: | Andalusite |
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Chemical Formula | Michael O’Donoghue, Gems, Sixth edition (2006) |
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Chiastolite Simulants |
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Do not exist due to its distinct marking. - Gemstones of the world, Walter Schumann, 2001, p 178 |
Physical Properties of Chiastolite |
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Mohs Hardness | 5 to 5.5Walter Schumann, Gemstones of the world (2001) |
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Specific Gravity | 3.00 to 3.15Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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Cleavage Quality | DistinctUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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Optical Properties of Chiastolite |
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Refractive Index | 1.627 to 1.645Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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Optical Character | Biaxial/-Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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Birefringence | 0.007 to 0.013Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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Colour |
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Colour (General) | White, gray, yellowishWalter Schumann, Gemstones of the world (2001) More from other references |
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Transparency | Translucent,OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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Lustre | VitreousArthur Thomas, Gemstones (2009) |
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Crystallography of Chiastolite |
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Crystal System | OrthorhombicHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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Habit | Square prismsArthur Thomas, Gemstones (2009) |
Further Information |
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Mineral information: | Chiastolite information at mindat.org |
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Significant Gem Localities |
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| Australia | |
- Pastoral Unincorporated Area
- Bimbowrie Conservation Park
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 381 | | USA | |
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 382 |
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