Larimar
Pectolite (NaCa2Si3O8(OH))
Rock Type: mineral

Physical Properties
Hardness: 4.5 to 5.0 (Mohs scale), Color: Sky blue to deep blue with white swirling patterns, Luster: Vitreous to silky, Crystal Structure: Triclinic, Cleavage: Perfect, Specific Gravity: 2.7 to 2.9
Formation & Geological History
Formed through volcanic activity where pectolite filled cavities in basaltic lava; exclusively found in the Los Chupaderos mine in the Dominican Republic. Formed during the Miocene epoch.
Uses & Applications
Primarily used in jewelry (pendants, rings, earrings) and as a decorative or healing stone for collectors.
Geological Facts
Larimar is known as the 'Atlantis Stone' or 'Dolphin Stone.' It was rediscovered in 1974 by Miguel Méndez, who named it after his daughter Larissa and the Spanish word for sea (mar).
Field Identification & Locations
Identify in the field by its distinct sea-blue color and white marbling. It is unique to the Dominican Republic. Collectors should look for deep blues with high contrast patterns.
Identified on: 4/30/2026
Mode: Standard