18kt yellow gold "Athena" bracelet by SeidenGang with 5 cabochon emeralds. SeidenGang is a renowned American fine jewelry brand founded in the 1980s by Carol Seiden and Carolyn Gang. They were among the first contemporary jewelry brands to use ancient civilizations as a primary design muse, transforming classical Greek and Roman plaster bas-reliefs, mythos, and archaeological motifs into wearable art. SeidenGang broke industry norms by marketing directly to women purchasing fine jewelry for themselves, rather than waiting to be gifted pieces.