gemstone
Larimar
NaCa2Si3O8(OH)
Hardness 4.5-5; Color ranges from white to light-blue to dark-blue; Luster vitreous to silky; Triclinic crystal system; Poor cleavage; Specific gravity 2.74-2.88
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Physical properties
Hardness 4.5-5; Color ranges from white to light-blue to dark-blue; Luster vitreous to silky; Triclinic crystal system; Poor cleavage; Specific gravity 2.74-2.88
Formation & geological history
Formed in cavities and veins of basaltic volcanic rocks, specifically in the Dominican Republic. It is a rare blue variety of the silicate mineral pectolite.
Uses & applications
Used primarily in jewelry, often cut en cabochon to display its unique color and pattern.
Geological facts
Larimar is sometimes called the 'Atlantis Stone' or 'Stefilia's Stone'. It is found only in a small mountainous area in the province of Barahona in the Dominican Republic.
Field identification & locations
Identify by its unique sea-blue coloration with white marbling, reminiscent of sunlight on ocean water. It is relatively soft, so care is needed in jewelry.
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