This necklace is made to order and personalized based on your preferred color of cord and your preferred stone. The one pictured here is hematite! A square knot feature makes it so the necklace length is adjustable with a maximum length of 30 inches. Because of the stone, this necklace has some weight to it, but is still easy to wear. If you have questions about if I can or can't get a certain stone, feel free to send me a message! I'll do my best to get my hands on what I can and the nicest pick of the bunch for you. In the buyer field, enter your preferred stone or a few different ones if you'd like a surprise and your desired cord color. If you list more than one stone, you can tell me a specific color cord for each stone as desired. Each item is hand made with careful attention. All products are nickel free! No two shells are alike but for the most part, all items will closely resemble the pictures given to the best of my abilities. If you have any questions about the item or customizations, feel free to contact me at any point.