mineral

Larimar

Pectolite (NaCa2Si3O8(OH))

Hardness: 4.5-5.0 on Mohs scale; Color: Sky blue, turquoise, deep blue, white; Luster: Vitreous to silky; Crystal Structure: Triclinic; Cleavage: Perfect; Specific Gravity: 2.74-2.90

Hardness: 4
Color: Sky blue, turquoise, deep blue, white
Luster: Vitreous to silky

Identified May 16, 2026More mineral →

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Physical properties

Hardness: 4.5-5.0 on Mohs scale; Color: Sky blue, turquoise, deep blue, white; Luster: Vitreous to silky; Crystal Structure: Triclinic; Cleavage: Perfect; Specific Gravity: 2.74-2.90

Formation & geological history

Formed by hydrothermal activity within cavities of basaltic lava. The blue color is unique to the Dominican Republic and is caused by copper substitution for calcium. Formation dates back to the Miocene epoch.

Uses & applications

Primarily used in jewelry (cabochons, beads, pendants) and as a decorative collector's stone. Highly valued in metaphysical circles as the 'Dolphin Stone' or 'Atlantis Stone.'

Geological facts

Larimar is found in only one square kilometer in the entire world, specifically in the Filipinas Mine in Los Chupaderos, Dominican Republic. It was 'rediscovered' in 1974 and named after the discoverer's daughter, Larissa, and the Spanish word for sea, 'mar.'

Field identification & locations

Identify in the field by its distinct blue-and-white marbled patterns and its occurrence within basalt matrices. It is found exclusively in the Caribbean. Collectors should look for deep blue colors with well-defined white 'webbing' or 'scales.'