Swarovski AB which stands for 'Aurora Borealis' is a special coating applied on top of Swarovski Crystals to give them that extra rainbow sparkle. We have added a wide range of AB colours to our range of Swarovski Bicone beads in sizes
4mm,
6mm &
8mm.
It is quite hard to photograph the AB effect constantly. Included below is a larger image to show the AB rainbow effect :
