description Labradorite Overview
Labradorite is a calcium-rich plagioclase feldspar mineral valued for labradorescence, an optical effect in which internal reflections produce shifting blue, green, yellow, or other colors as the stone moves relative to light. It occurs in igneous rocks such as anorthosite and is used as an ornamental stone and gemstone. The mineral was first described from the Labrador region of Canada, with an early discovery reported on the Isle of Paul in 1770.
help Labradorite FAQ
What causes labradorescence in labradorite?
Labradorescence is produced by internal reflections within the mineral. As the stone moves relative to the light, those reflections can show shifting blue, green, yellow, and other colors.
What type of mineral is labradorite?
Labradorite is a calcium-rich plagioclase feldspar mineral. It commonly occurs in igneous rocks such as anorthosite.
Why does labradorite change color when it moves?
The color comes from the angle-dependent reflection of light inside the stone. Changing the viewing or lighting angle can therefore make different flashes appear.
Is labradorite valued for one fixed color?
No. Its appeal comes from labradorescence, which can shift among colors such as blue, green, and yellow. The visible effect depends on the stone's internal structure and its position relative to light.
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