Tidoo Jewelry Lovely Dolphins Yellow Gold Plated Stud Earrings Charm for Girls Size:0.47''*0.35'' Material:Cooper,18k Gold.Top quality Super Shiny Cubic Zirconia CZ(Australia Crystals) All uses the manual polishing technology. To avoid tarnish, limit exposure to water, perfume, or body cream An excellent gift for anniversaries, graduations, birthdays, or just as a surprise to remind that special someone how much you care.