This gemstone swirl pendant is handcrafted from .999 fine silver wire and a pale icy blue aquamarine. Aquamarine is the birthstone for March. Each of my gemstone pendants are handmade one-at-a-time, so while similar, they are not identical. You are selecting the actual one you will be receiving. The chain is not included, but I do have a selection of chains if you need one. approximately 1/2" x 1 1/4" 14mm x 33mm 3mm bail