Larimar
From The Gemology Project
| 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
Acknowledgements and External Links
Gems & Gemology, Winter 1989 Issue Larimar
Blue Pectolite from the Caribbean
