| General Information |
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| Chemical Formula | Michael O’Donoghue, Gems, Sixth Edition (2006) |
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| Physical Properties of Carletonite |
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| Mohs Hardness | 4 to 4.5Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Specific Gravity | 2.44Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Cleavage Quality | PerfectMichael O’Donoghue, Gems, Sixth Edition (2006) |
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| Optical Properties of Carletonite |
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| Refractive Index | 1.517 to 1.521Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Optical Character | Uniaxial/-Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Birefringence | 0.004Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Pleochroism | Some of the blue specimens may show blue to pinkish brown pleochroismMichael O’Donoghue, Gems, Sixth Edition (2006) |
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| Colour |
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| Colour (General) | Light blueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Transparency | TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Crystallography of Carletonite |
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| Crystal System | TetragonalUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Geological Environment |
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| Where found: | Is found in nepheline syeniteMichael O’Donoghue, Gems, Sixth Edition (2006) |
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| Further Information |
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| Mineral information: | Carletonite information at mindat.org |
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| Significant Gem Localities |
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| Canada | |
- La Vallée-du-Richelieu RCM
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 395 |
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