Check the listing for details. Dragon Stone - Mixed (22lbs Box). Condition: New. Listed at 64.98 USD. Dragon Stone (also known as Ohko Stone) is named such for its unique texture that mimics a dragon's scales. Natural dragon stones take their name from their unusual greenish brown colouring and uneven, rippled surface texture. Dragon Stone has become very popular with iwagumi aquariums where the main focus is on the rocks and the plants complement the overall set up. Small Stones .5 - 2lbs / 6" x 4" x 3.5" approx. Medium Stones 2 - 6lbs / 8" x 6" x 4.5" approx. Large Stones 6 - 11lbs / 11" x 8" x 6" approx. (All weights are approximate and rocks vary in width and height.) When placed in groups they have maximum effect and plants really complement them. It's a finely detailed stone with many crevices and holes. These crevices are perfect for planting mosses and small plants. The rocks are most effective when used in groups to form the main foundation to your aquascape with plants placed around them.