Larimar

Larimar is a rare blue pectolite mineral found only in the Dominican Republic. Its coloration varies from white to light blue, green-blue, and deep blue.

Etymology and History:

The name "Larimar" was coined by Miguel Méndez, who rediscovered the stone in 1974. He combined his daughter's name, Larissa, with "mar" (the Spanish word for sea), to reflect the colors of the Caribbean Sea where it was found. While officially rediscovered in the 1970s, local Dominicans were reportedly aware of the stone's existence long before then.

Geology and Occurrence:

Larimar is a variety of pectolite, a hydrous sodium calcium silicate hydroxide mineral. Its blue color is due to the substitution of copper for calcium. It is found within volcanic rocks, specifically cavities and fractures within basalt flows. The only known source of gem-quality Larimar is the Los Chupaderos mine in the Barahona province of the Dominican Republic.

Properties:

• Chemical Formula: NaCa₂(Si₃O₈)(OH)
• Crystal System: Triclinic
• Hardness (Mohs scale): 4.5 - 5
• Luster: Vitreous, silky
• Transparency: Translucent to opaque
• Specific Gravity: 2.7 - 2.9

Uses:

Larimar is primarily used as a gemstone in jewelry. It is cut and polished into cabochons, beads, and other shapes for use in rings, pendants, earrings, and bracelets. The value of Larimar is determined by its color intensity, with deeper, richer blues commanding the highest prices. Stones with white or green inclusions are typically less valuable.

Care:

Larimar is a relatively soft stone and should be handled with care. Avoid exposing it to harsh chemicals, ultrasonic cleaners, or extreme temperatures. Clean with a soft cloth and mild soap and water.

Cultural Significance:

Larimar is considered a national gemstone of the Dominican Republic and is often associated with healing, tranquility, and communication. Some believe it possesses metaphysical properties that promote relaxation and peace.