Estes Spectrastone Gravel is a high-quality non-toxic gravel designed specifically for desktop tanks, including betta habitats and other smaller marine and reef tanks. All Estes products are clear coated, using 100% environmentally friendly high gloss resin. This state of the art process makes their gravel virtually dust free, and provides the best possible appearance and ease of use in your aquarium. Contains 5 lb of Blue Jean colored gravel.