While oxidized silver and white gold are generally considered hypoallergenic, it's important to note that some people may still experience sensitivities or allergies. If you have known allergies to metals or other materials, we recommend consulting with a dermatologist or allergist before purchasing jewelry. Here are some common allergens to be aware of: Nickel: Often used in white gold alloys. Cobalt: Another metal used in white gold alloys. Other base metals: Michelle Valadon jewelry do not have base metals because all pieces have either 0.925 silver or 14K or 18K gold.