Brook Stone is a new aquarium stone that is similar in appearance to other popular aquascaping rocks such as Ryuoh Stone and Seiryu Stone. Brook Stone features a deep grey tone with white striations running throughout. Similar to Ryuoh and Seiryu, Brook Stone also has jagged textures that provide character to the planted aquarium. Its deep hue contrasts well against aquatic plants and its shape is ideal for creating Iwagumi style aquascape layouts.