A breath of spring comes to mind when wearing this long necklace. From the wavy gold ring hangs a gold wire flower with an aurora borealis (AB) crystal and pale grey freshwater pearl. Aurora Borealis refers to the thin metallic coating that is applied to crystals, creating a beautiful iridescent sheen. The finish is meant to pick up and reflect the colors around it. ... So if you come across a bead that has an AB mentioned with the color, just know it means extra sparkly and iridescent!