These beautiful shells are made from natural shells that have been burnished and polished to become so shiny and beautiful. Natural mineral color, does not fade. We carefully select each piece of shell to ensure that there are no visible blemishes. So when used as decorations, they are beautiful tabletop marine-themed ornaments, and they are perfect for holding in your hand to see up close. As the home of hermit crabs, they are light and portable, and they are a luxurious home for hermit crabs, making the little creatures more beautiful and cute.