Labradorite is a member of the Feldspar family. It is treasured by collectors for its remarkable play of color, known as labradorescence. The term labradoresence is defined as the peculiar reflection of the light from submicroscopical planes orientated in one direction (rarely in two directions); these planes have never such a position that they can be expressed by simple indices, and they are not directly visible under the microscope.
The stone, usually gray-green, dark gray, black or grayish-white, is composed in aggregate layers that refract light as iridescent flashes of peacock blue, gold, pale green, or coppery red. The predominant blue varies within the light, displaying hues from deepest blue to various shades of pale, almost blue-green. It was discovered in Labrador, Canada in 1770 and hence the name Labradorite.
Here are the photos of the Labradorite animals.