Identification
Labradorite is an opaque to translucent member of the feldspar group of minerals. It is often used as a semiprecious stone in jewelry or in art.
Types
These stones are usually gray or black, but sometimes they have iridescent colors, most commonly in blue or violet, but also in yellow, orange, green and multicolored.
Schiller
When light hits some labradorite stones, they may display rainbow-colored hues called "schiller." The color display is due to light refraction among layers inside the stone.
Yellows
Yellow labradorite can be found in gold, lemon, light straw and nearly white. Like other yellow iridescent feldspar minerals, it is sometimes called sunstone.
Significance
Labradorite is considered a beautiful but minor gem. It is relatively common in nature, although the yellow color is more difficult to find.