gemstone

Larimar (with dendritic inclusions)

Blue Pectolite (NaCa2Si3O8(OH))

AI-generated identification · may be incorrect

Hardness: 4.5-5. Color: Light blue, greenish-blue, white, with darker dendrites. Luster: Silky to dull. Crystal structure: Triclinic.

Hardness: 4
Color: Light blue, greenish-blue, white, with darker dendrites
Luster: Silky to dull

Identified July 3, 2026More gemstone →

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Physical properties

Hardness: 4.5-5. Color: Light blue, greenish-blue, white, with darker dendrites. Luster: Silky to dull. Crystal structure: Triclinic.

Formation & geological history

Formed in cavities within basaltic volcanic rocks, often associated with hydrothermal activity. Only found in the Dominican Republic.

Uses & applications

Used primarily in jewelry and as a collector's stone.

Geological facts

Also known as 'Stefilia's Stone', it is a rare blue variety of the silicate mineral pectolite. The blue color is due to copper substitution for calcium. This specific piece features dendritic inclusions, likely manganese or iron oxides, which are less common to see prominently displayed in standard jewelry settings.

Field identification & locations

Identify by its distinctive blue and white mottled appearance, often resembling sunlight dancing beneath Caribbean waters. The presence of black dendrites (tree-like formations) is a unique variation. Found exclusively in the Barahona province of the Dominican Republic.