(1) A member of the plagioclase feldspar group, labradorite is found in many igneous rocks. (2) Labradorite rarely forms in crystals. When it does, they are generally tabular and often twinned. Most commonly occurs massive , grainy , as elongated fragments, as chunky masses, and rounded.

N. American Inuit tribes claim the first Labradorite fell from the Aurora Borealis from the fire of their ancestors. Another legend describes a brave Inuit warrior who struck Labradorite with his spear and created the Northern Lights.