What is the difference between crystals marked with AB and without AB?
The crystals marked with AB possess an Aurora Borealis like effect. Aurora borealis is what is known as the luminous phenomena seen as streams of light, visible at night around the North Pole. Swarovski offers an AB coating applied to specific crystals. This coating makes these beads have somewhat of a rainbow effect on top of their base color, say on top of an Emerald colored Swarovski bead. We use crystal AB for all the items.