Rock Identifier
Larimar (Pectolite (NaCa2Si3O8(OH))) — gemstone
gemstone

Larimar

Pectolite (NaCa2Si3O8(OH))

AI-generated identification · may be incorrect

Hardness of 4.5 to 5 on the Mohs scale, varying shades of blue to turquoise-white, silky to vitreous luster, and monoclinic crystal system.

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Physical properties

Hardness of 4.5 to 5 on the Mohs scale, varying shades of blue to turquoise-white, silky to vitreous luster, and monoclinic crystal system.

Formation & geological history

Formed in volcanic cavities where hydrothermal fluids rich in copper and calcium precipitated pectolite within basaltic rocks.

Uses & applications

Primarily used in high-end jewelry, carvings, and as a collectible gemstone.

Geological facts

Also known as the Atlantis Stone, Larimar is exceptionally rare and found exclusively in a single mountainous region in the Dominican Republic.

Field identification & locations

Identified by its distinctive oceanic blue color patterns resembling sunlight dancing on Caribbean water; mined manually in Barahona.