Properties
| Category | Inosilicate mineral |
|---|---|
| Formula | NaCa2Si3O8(OH) |
| Crystal system | Triclinic |
| Color | Shades of blue, blue-green |
| Crystal habit | Tabular to acicular, radiating fibrous, spheroidal, or columnar; massive |
| Cleavage | Perfect on {100} and {001} |
| Fracture | Uneven |
| Tenacity | Brittle; tough when compact |
| Mohs scale hardness | 4.5 - 5 |
| Luster | Silky, subvitreous |
| Diaphaneity | Translucent to opaque |
| Specific gravity | 2.84 - 2.90 |
From the Wikipedia article
Larimar is the tradename for a rare blue variety of the silicate mineral pectolite found only in the Dominican Republic, around the city of Barahona. Its coloration varies from bluish white, light-blue, light-green, teal, green-blue, turquoise blue, turquoise green, turquoise blue-green, deep green, dark green, to deep blue, dark blue and purple, violet and indigo and the larimar can come in many varieties and color mixes.
Source
Source record: crystal-compendium/larimar/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Larimar — revision id 1373068074. Text and properties from Wikipedia, licensed CC BY-SA 4.0.