Ohko stone, often referred to as “Dragon Stone” is sought internationally by aquarium enthusiasts. The textured surfaces of the rock are aesthetically appealing with color varying from brown, to green, to even hints of red now and again. You’re going to receive 20lbs of stone. Each and every order contains one larger stone, about 7 to 11 lbs., plus numerous smaller stones to make up the full 20lbs. Please see the second one picture for a representative sample. Each and every order is different, as nature makes only one of Each and every stone. As Ohko stone is basically dried clay, it really helpful to wash and soak the stone for a few days before use. Since it is clay based, Ohko stone can also be broken to create smaller pieces with a hammer and chisel.