a beautiful underwater landscape with our FishTank Decoration Stones! resin, these diamond-shaped stones are and long-lasting. They also have a special night-glow- feature that adds- mystery to your aquarium. Perfect for fish enthusiasts, hobbyists, and anyone who wants to add a unique to their aquatic-environment. These stones can be used in a variety of settings, such as home aquariums, offices, restaurants-, and even hotel lobbies. Let your imagination - and a beautiful underwater world~!.