This beautiful rock is widely used in Nature Aquariums and can be seen in many such publications and competition entrees.
A tank in store at TGM in Wrexham was planted by Franscesco Nardelli with the assistance of Davide Chiacchio and uses Seiryu stone to great effect.
Please note that this rock may raise pH and hardness slightly. Using ADA Aqua Soil will resolve this.
Price is per kilogram. So if you want 4Kg of Seiryu stone add 4 of this product to your shopping cart, for example.