What is "AB"?

The characteristics of Swarovski crystals are unparalleled in both style and substance. Not only are their cuts distinct, but the assorted colors and shapes cover a broad spectrum. The brilliant sparkle of each crystal is actually resulted from a glass composition containing 32 percent lead. Besides this refraction maximizing strategy, special metallic coatings are used on some of the crystals to ensure that light refracts from the surface in a rainbow spectrum. One of the most utilized coatings is Aurora Borealis, simply known as "AB."