[MATERIAL]*18K Gold Plated Copper. It do not tarnish and oxidize easily, it's wearresistant, which can last longer than other jewelries. It is amazingly hypoallergenic and has high resistance to rust, corrosion and tarnishing, which is easy to maintain.[Warm tips]1.Please avoid contacting with the acid and alkali, corrosive substances.2.Please avoid the collision, so as to avoid surface scratches.3.Please avoid wearing it when sweating a lot, shower or sleep, etc.4.Please wipe them with soft cloth when you clean your jewelries.[Long time ]We believe our products. That's why we promise products 90day money back or exchange , easytoreach support.In order to leave you a happy shopping experience, if you have any questions, no matter pre or after, just contact us, we will do our best to help you and offer an excellent service.