• Certified Nickel Free • Hypoallergenic • Sterling Silver setting• Stone: lab created pale purple amethyst gemstone • Diameter: approx. 5 mm Certified Nickel Free by Athena Allergy, Inc. using Nickel Alert™. These earrings are guaranteed safe for those allergic to nickel. Our promise to you: You will never have a problem with a Certified Nickel Free product!