Our 1st fully water, sweat & tarnish resistant necklace! Stylish paperclip chain 22K yellow gold plated with PVD technology Heart tag measures approximately 3/4" top to bottom. Chain measures 16" with 2" extender and lobster claw enclosure. About PVD plating: Physical Vapor Deposition plating is a modern and advanced method used for sustained wear: Resistant to sweat, water, body oils and lotions Highly durable and resists scratching, fading, and tarnishing