For decades, Gogo Ferguson has been designing bold, sculptural jewelry inspired by the beauty of the Cumberland Island coast, and her pieces have picked up a devoted, insider-y, “if you know, you know”-type following along the way. The line is both sophisticated and wild, exquisitely crafted yet not too fussy, and made exclusively in Cumberland Island, Georgia, where Gogo's family has lived for generations. An especially big source of inspiration is the dried seaweed that adorns the beaches of New England, which she has transformed into bracelets, earrings, large wall sculptures, and necklaces like this one. It's made of tumbaga, a combination of copper, nickel, and zinc that can be polished with lemon juice or Tarnex.