These beautiful Swarovski crystal birthstones make a great addition to any of our pendants. Each birthstone measures 6mm in diameter and is finished with a shiny sterling silver bezel around the stone. This listing is for ONE birthstone. If you need multiple birthstones, please add them individually. Shipping is included with this listing. If purchasing this item after ordering your breast milk jewelry piece, please inform us via Facebook or email at firstname.lastname@example.org that you have added a birthstone onto your order so we can make a note on your original order. :) Thank you!