This listing is for one custom hand stamped stainless steel puzzle piece necklace. When placed together the 3 pieces make the shape of a heart. They can each be stamped with one name. On each hangs a Swarovski birthstone crystal. The necklaces hang on a stainless steel chain of your choice. We carry petite ball, ball, or cable. If you would like to add a big sis, middle sis, little sis disc to these we can do that. You will be given the option at checkout. The disc will be a 1/2" round disc stamped with big sis, middle sis, or little sis. Thanks for looking! You will receive one necklace without the small round disc pictured unless you select this option at checkout.