Azure Blue Origins Series Acrylic Gems by BioBubble are the perfect substrate or decorative accent for your aquarium, terrarium, or other type of habitat. Designed to bring vibrancy to any environment, the colorful, glassy gems provide a sense of sophistication and offer a modern appearance. Watch as they glimmer under the light, reflecting beauty throughout your entire home or office space! Constructed of acrylic, the Origins Series Gems are 100% non-toxic, making them completely safe for any type of pet!