Gold Double Necklace Phoebe [Metal Allergy-Friendly] Ball Layered Necklace / Surgical Stainless Steel Yellow Gold / ~Surgical Stainless Steel~ This material is corrosion-resistant and gentle on the skin. It's also used in medical instruments such as scalpels and needles, so those with metal allergies can wear it with confidence. Other features include water resistance, tarnish resistance, and high durability against deformation. ~Washable Accessories~