Labradorite is a Plagioclase feldspar mineral first discovered in Labrador, Canada. Labradorite contains a special iridescent quality known as labradorescence, more commonly known as flash. It is caused by internal fractures that reflect light back and forth, dispersing it into different colors. The brighter the flash, the higher quality and more desired it is. Labradorescence comes in a wide variety of colors, including blue, turquoise, green, yellow, orange, and red. The rarest colors of Labradorite are purple and pink.