Center the stone in the ring setting and gently squeeze in prongs (with your hands or pliers) working from opposite sides to keep the stone centered. Once the prongs are bent in, use the burnishing tool to smooth them into place.
14mm Sea Urchin Stones fit in most 14mm Rivoli Settings. Choose your favorite combinations.
The ring is adjustable (1x). Do not adjust the ring size until the ring is sold.