Water-resistant, Non-Tarnish, No nickel, No lead This trendy necklace comes with matching earrings. Materials: 18K gold filled is a metal composed of a solid layer of gold that is bonded to base metal through heat and pressure. Gold-filled jewelry will not wear off over time, and if taken care of properly it can last a lifetime. Measurement: 18 inches Closure: Lobster claw Style: Trendy Allergy Information: Hypoallergenic Made in Brazil.