The double helix ring is a 18k gold plated stainless steel ring with a complex spiral designs. Looks great on the index finger for a fun pop of shine. Pair with other SOCALI jewelry for a cohesive look. Material: 18K Gold Plated Stainless Steel Origin: California, USA Material: Hypoallergenic, nickel free, and good for sensitive skin. Waterproof, sweatproof, and tarnish free.18K gilding is used to achieve gold color with beautiful shade and make the product resistant to the external environment.