View your list of saved words. (You can log in using Facebook.)
Type of feldspar mineral in the plagioclase series that is often valued as a gemstone and as ornamental material for its red, blue, or green iridescence. The mineral is usually gray or brown to black and need not be iridescent. Labradorite is named for its occurrence on the coast of Labrador, Canada.
This entry comes from Encyclopædia Britannica Concise. For the full entry on labradorite, visit Britannica.com.