| General Information |
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| A variety or type of: | Pectolite |
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| Chemical Formula | Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Physical Properties of Larimar |
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| Mohs Hardness | 5Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Specific Gravity | 2.74 to 2.90Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Optical Properties of Larimar |
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| Refractive Index | 1.595 to 1.645Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Optical Character | Biaxial/+Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Birefringence | 0.028 to 0.038Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Colour |
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| Colour (General) | Blue, bluish-white, white, grayUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Transparency | OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Fluorescence & other light emissions |
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| Fluorescence (Short Wave UV) | Yellow or orangeUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Crystallography of Larimar |
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| Crystal System | TriclinicHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Further Information |
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| Mineral information: | Larimar information at mindat.org |
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