mineral
Labradorite
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
AI-generated identification · may be incorrectHardness of 6-6.5 on Mohs scale, dark gray to smoky background, vitreous to pearly luster, triclinic crystal system, exhibiting distinct labradorescence.
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Physical properties
Hardness of 6-6.5 on Mohs scale, dark gray to smoky background, vitreous to pearly luster, triclinic crystal system, exhibiting distinct labradorescence.
Formation & geological history
Forms primarily in mafic igneous rocks like gabbro and basalt through slow cooling of magma deep within the Earth's crust.
Uses & applications
Widely used as an ornamental gemstone in jewelry, for high-end decorative objects, and favored by mineral collectors.
Geological facts
Named after Labrador in Canada where it was first discovered in 1770, its iridescent flashes are caused by lamellar intergrowths.
Field identification & locations
Identified by its characteristic play of blue, green, and gold colors when viewed at specific angles; commonly sourced from Canada, Madagascar, and Finland.
