Our jewelry is made from the finest sterling silver and gold plated silver. These materials are not suitable to be worn in any form of water, as it may cause tarnish. These materials are less likely to cause any irritation and will not turn green in the ear. To have your MBT pieces in the best conditions for the longest amount of time we advise no contact with water, perfume or moisturizer. We do NOT recommend wearing any of our pieces in the water including the opal stud earrings. The hoops and studs on the earrings are made from either sterling silver or surgical steel and are suitable for people with sensitive’s ears. The leather chokers are all made from real leather and again are NOT suitable to be worn in water. We recommend storing all pieces in a snap lock bag when they aren’t being worn. Store the bag in a dry dark place. This will prolong the oxidation process. All MBT pieces are handmade and there fore require to be handled with care. All MBT jewelry comes with a 6-month warranty for any breaks or damages to the piece as long as these care instructions are followed.