mineral

Larimar

Blue Pectolite (NaCa2Si3O8(OH))

AI-generated identification · may be incorrect

Hardness: 4.5-5. Color: Light blue to greenish-blue, often with white marbling. Luster: Vitreous to silky. Crystal structure: Triclinic. Cleavage: Perfect in two directions. Specific gravity: 2.74-2.88.

Hardness: 4
Color: Light blue to greenish-blue, often with white marbling
Luster: Vitreous to silky

Identified August 16, 2026More mineral →

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Physical properties

Formation & geological history

Formed in cavities and veins within basaltic volcanic rocks, where hot mineral-rich fluids deposited pectolite. Found exclusively in the Dominican Republic.

Uses & applications

Primarily used in jewelry making, often cut into cabochons and set in silver or gold.

Geological facts

Also known as the 'Atlantis Stone' or 'Dolphin Stone'. Its unique blue color is attributed to copper replacing calcium in the pectolite structure.

Field identification & locations

Identified by its distinctive pale blue to sky blue color with white, cloud-like patterns. Can only be found in a specific mountainous region of the Dominican Republic.