Measuring Cup Earrings Charm is zinc alloy tibetan Silver measuring 13mm X 14mm. Earring wires are hypoallergenic stainless steel & will not tarnish. Stainless steel is a great option for sensitive ears, but can still cause reaction in some people. I do include rubber ear stops. Care: As with most jewelry we recommend removal before showering or swimming. Measuring Cup Earrings, Tibetan Silver Gift For Cook, Chef, Cooking Stainless Steel Earrings