mineral

Larimar

Blue Pectolite (NaCa2Si3O8(OH))

Hardness: 4.5-5.0 on Mohs scale; Color: sky-blue, turquoise, or deep blue with white patterns; Luster: Vitreous to silky; Crystal Structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 2.70-2.90.

Hardness: 4
Color: sky-blue, turquoise, or deep blue with white patterns
Luster: Vitreous to silky

Identified March 23, 2026More mineral →

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Physical properties

Formation & geological history

Formed through volcanic activity where copper-rich fluids filled cavities in basaltic lavas. It is classified as a secondary mineral and dates back to the Miocene epoch (approx. 23 to 5 million years ago).

Uses & applications

Primarily used in the jewelry industry for cabochons, beads, and silver-set pendants. It is also highly valued by mineral collectors due to its rarity and aesthetic appeal.

Geological facts

Larimar is found only in one square kilometer area in the Dominican Republic. It was named by Miguel Méndez, who combined his daughter's name 'Larissa' with the Spanish word for sea 'Mar'. Its blue color is caused by the replacement of calcium with copper impurities.

Field identification & locations

Identify in the field by its distinct 'marbled' white and blue patterns reminiscent of sunlight reflecting on water. It is exclusive to the Filipinas Mine in Los Chupaderos, Dominican Republic. Collectors should look for high-contrast 'web' patterns and deep blue hues.