What is Larimar?


Larimar is a rare blue variety of pectolite found only in the Dominican Republic. Its color varies from white, light blue, green-blue to deep blue. Larimar is often used as a gemstone and is popular for its unique blue color and oceanic patterns.

Larimar is a rare gemstone that comes in shades of blue reminiscent of the sea. Its unique appearance and color make it a popular choice for jewelry and decorative items, especially rings and pendants.

Gemstone Properties

Chemical ClassificationInorganic - Silicate
ColorRanges from light blue to deep blue, often with white, grey, or greenish patterns.
LusterSilky to vitreous.
OccurrenceDominican Republic (it's the only known source).
FormationFound in cavities within basaltic lava formations.
DiaphaneityTranslucent to opaque
Mohs Hardness4.5 to 5
Specific Gravity2.74 - 2.99
Diagnostic PropertiesBlue to greenish-blue, often with white patterns.
Chemical CompositionNaCa2Si3O8(OH)
PleochroismNot observed in larimar.
Crystal SystemTriclinic (variety of Pectolite)
Optical PropertiesBiaxial (+)
Refractive Index1.600 - 1.650
2V angleMeasured: 85° to 90°
DispersionNot typically noted for its dispersion.