Aquarium Natural Rock Aquascape DIY Kit, STACK STONE - ASSORTMENT - Aquarium Safe, All Natural Stone, Organic Terrarium, Iwagumi Aquarium, Cichlid Aquarium 4 Pounds of Assorted Thin Pieces of Decorative Slate, Shale and Other Aquarium-Safe Stones See Pictures for Examples of What you can build with Stacked Stone Pictures show stone both wet and dry as water enhances the stone colors. Natural Stone, therefore Every Order is UNIQUE.