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

Larimar

Pectolite (NaCa2Si3O8(OH))

AI-generated identification · may be incorrect

Hardness of 5 on the Mohs scale, striking light-blue to cyan color with white ray-like patterns, and a silky to vitreous luster.

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Physical properties

Hardness of 5 on the Mohs scale, striking light-blue to cyan color with white ray-like patterns, and a silky to vitreous luster.

Formation & geological history

Formed by hydrothermal activity in volcanic cavities, specifically restricted to the Dominican Republic in the Caribbean.

Uses & applications

Extensively cut and polished into cabochons for rings, pendants, and high-end artisanal jewelry.

Geological facts

Also known as the Atlantis Stone, it was discovered relatively recently in 1974 by a Peace Corps volunteer and a local resident.

Field identification & locations

Easily identified by its distinctive oceanic patterns resembling sunlight dancing on Caribbean water; found almost exclusively in Barahona, Dominican Republic.