Labradorite is one of my favorite gemstones. It is a type of feldspar, found originally in Labrador, as you might have guessed! The parallel arrangement of its molecules causes it to act like a diffraction grating, and disperse light in such a way as to produce irridescence, or what they call "labradorescence". (You have seen this effect on the surface of a compact disc). These beautiful AAA labradorite stones are topped with a little collar and simulated pearl. They hang from quality silverplate French wires that are tarnish resistant and lead and nickel-free. The labradorite stone is 0.6 inches wide (15mm).