mineral
Labradorite pendant
Labradorite, a plagioclase feldspar: (Ca,Na)(Al,Si)₄O₈
AI-generated identification · may be incorrectThe pendant appears to be a cut, polished labradorite with blue iridescent flashes. Hardness is about 6–6.5 Mohs; it has a triclinic crystal structure and vitreous luster, though color and internal features are difficult to assess from the image.
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Physical properties
The pendant appears to be a cut, polished labradorite with blue iridescent flashes. Hardness is about 6–6.5 Mohs; it has a triclinic crystal structure and vitreous luster, though color and internal features are difficult to assess from the image.
Formation & geological history
Labradorite crystallizes in slowly cooling igneous rocks, especially gabbro and anorthosite; its iridescence results from light interference within microscopic mineral layers. It formed across many geological ages.
Uses & applications
Used for jewelry, ornamental objects, and mineral collecting; feldspar is also widely used in glass and ceramics.
Geological facts
Its characteristic color-shifting sheen is called labradorescence, caused by internal lamellar structures rather than surface coating.
Field identification & locations
Look for blue, green, or gold flashes that change with viewing angle, often against a gray base. Notable sources include Labrador, Canada, Madagascar, Finland, and Norway.
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