These delicate rhinestone cup chain necklaces are made with real 18k Gold/platinum plated Copper. The necklaces are around 17 inches, & comes on a adjustable extender. Extender is 2 inches. 3 rhinestone size available: 3mm, 2.5mm, 2mm. QTY: 1 necklace Color: Gold, Platinum . For longer lasting, please avoid contact with perfumes, body oils, & other chemicals, including household cleaners Delicate 18K Gold/Platinum Plated Dainty Minimalist Fancy Rhinestone Cup Chain Tennis Finished Necklace