Labradorite (a variety of plagioclase feldspar) is a fairly abundant grayish mineral that has brilliant flashes of color (usually green, blue or red) after it is polished. Labradorite is named for Labrador, where it was first discovered in 1770. It is also found in Madagascar, India, Newfoundland, Finland, and Russia. Its distinctive flash of irridescent colors is known as "labradorescence." These beautiful flashes of color change according to the angle of light refraction, and may be somewhat metallic tints of blue, green, yellow, and pink, with the majority of the stone itself a dark grey in color. It is popular as an ornamental stone and as well as a gemstone for use in jewelry. Labradorite is not enhanced.