Material: alloy This necklace is suitable for various occasions, such as daily wear, wedding party, birthday party and other important occasions The chains we used are made from the toughest polished brass,gold plating with protective ,hanging a shiny disc and bar, and free,, to wear. How to for Your Jewelry: To the plating, your jewelry to hand washing, swimming, exercising, cleaning, and before applying any personal body products. Maintain your jewelry’s high by avoiding contact with soap, perfume, lotion, makeup, hair & cleaning products. Good Customer Service: If you have any problem,please feel free contact us by Mail,we will answer within 24 hours.we offer or replace in 90 days.Just be happy to add this nice necklace to your jewelry collection. Good Customer Service: If you have any problem,please feel free contact us by Mail,we will answer within 24 hours.we offer or replace in 90 days.Just be happy to add this nice necklace to your jewelry collection. Good Customer Service: If you have any problem,please feel free contact us by Mail,we will answer within 24 hours.we offer or replace in 90 days.Just be happy to add this nice necklace to your jewelry collection.