Larimar is a rare blue variety of pectolite (NaCa₂Si₃O₈(OH)), a sodium calcium silicate mineral. Found only in the Dominican Republic, larimar displays a unique range of blue and turquoise hues caused by trace amounts of copper. These tumbled pieces have been polished to highlight their distinctive color and smooth texture.
Features:
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Composition: Sodium calcium silicate hydroxide (pectolite) with trace copper contributing to its blue coloration.
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Appearance: Varies from light blue to deep turquoise with white streaks or patterns, polished to a glossy finish.
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Formation: Forms in volcanic cavities through the cooling of hydrothermal fluids rich in silica and other elements.
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Physical Properties: Moderate hardness (Mohs 4.5–5), relatively soft and requiring careful handling.
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Educational Value: Useful for studying mineral chemistry, volcanic rock formation, and trace element effects on mineral color.
Tumbled larimar offers a rare glimpse into volcanic mineral formation with vibrant colors that reflect its unique geologic origins.
