mineral

Larimar

Blue Pectolite (NaCa2Si3O8(OH))

Hardness: 4.5-5.0 on Mohs scale; Color: Sky blue to green-blue with white marbling; Luster: Vitreous to silky; Crystal Structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 2.7-2.9.

Hardness: 4
Color: Sky blue to green-blue with white marbling
Luster: Vitreous to silky

Identified May 25, 2026More mineral →

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Physical properties

Formation & geological history

Formed in cavities within basaltic lavas through hydrothermal activity where copper replaces calcium, giving it the blue hue. Primarily Miocene in geological age.

Uses & applications

Exclusively used in jewelry (cabochons, beads, rings) and as a collector's mineral.

Geological facts

It is also known as the Stefilia's Stone or Atlantis Stone. It is found in only one location in the world: a remote mountain range in the Dominican Republic.

Field identification & locations

Identify by its unique 'sea-and-sky' patterns and chatoyancy. In the field, it is found in the Filipinas Mine in Los Chupaderos. Collectors should look for intense blue saturation with clear white webbing.