Moon Pi Opal Gold Fill RingHandmade in California, these precious rings add a touch of interest to your stacking collection. With a fine gold filled band and a delicate opal stone. Gold fill 3mm Ethiopian opal stone Fine hammered textured band Smooth bezel Handmade Each ring sold separately Based in California, Moon Pi Jewelry is handcrafted in small batches by Jennie Stone. Stone uses traditional metal smithing techniques and only works with natural ethically sourced stones.