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16.52.01: Larimar

Last updated

May 6, 2022
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- 16.52: Pectolite
- 16.53: Peridot

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Larimar
Chemical composition	NaCa₂Si₃O₈(OH)
Crystal system	Triclinic
Habit	Aggregate
Hardness	5
Optic nature	Biaxial +
Refractive index	1.59 - 1.63
Birefringence	0.028-0.038
Dispersion	Very weak
Specific gravity	2.62 - 2.87
Lustre	Silky
Fluorescence	Yellow or orange (SW-UV)

A blue pectolite found in the Dominican Republic. See pectolite

Acknowledgments and External Links

Gems & Gemology, Winter 1989 Issue Larimar
Blue Pectolite from the Caribbean

Acknowledgments and External Links

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