Length of the necklace:15+2extender. Size of the butterfly pendant?18mm*14mm. Gold necklace metal:18K Gold Plated twice over brass+lifetime protective finish. Never faded.Lead and nickel free. The dainty cute necklace packaged with a beautiful box,exquisite card.It??s a pretty gift for best friends, family,lover or anyone on birthday,christmas,graduation,wedding or mothers day etc. 100% satisfaction and money back guarantee.?If you have any questions,contact us at any time.