Moms Dream Vintage Finds Shop › 14K and Onyx Beaded Necklace Image 1 of 5 Image 2 of 5 Image 3 of 5 Image 4 of 5 Image 5 of 5 14K and Onyx Beaded Necklace $25.00 This is a 12” long, black onyx hand-knotted necklace with 14K spacer beads and clasp. It is in excellent condition. Add To Cart Added! This is a 12” long, black onyx hand-knotted necklace with 14K spacer beads and clasp. It is in excellent condition.