The Star ear stud is gilded with fine 24 carat gold and is set with white zirconium oxides. It is a fine and delicate chip to wear alone or in accumulation. - An ideal alternative to using diamonds, zirconium oxide is a laboratory-made stone. - These properties of capturing and diffusing light give it a frank and clear shine. Maintenance: To preserve and protect your jewelry, it should not come into contact with any chemicals, cosmetics or liquids. We recommend removing your jewelry before sleeping and storing it in its case or pouch. To prolong its shine, the use of a soft cloth is recommended.