Clip charms are made of 925 anti-allergy silver. These clip charms are lead-free, nickel free, hypoallergenic, and will not cause redness, itching, or blackening of the skin s, nor will they cause redness, swelling, or itching. These clip charms are compatible with most charm bracelets including Pandora, Biagi, Chamilia,European Charm Bracelets/Necklaces. These clip charms are the perfect gift for Christmas, birthdaysor other occasions such as Mother's Day, Valentine's Day, etc. If you have any question or concern, don't hesitate to contact us directly.Thank for looking and Stay Healthy!