Check the listing for details. Dragon Stone (Ohko Stone) / Planted Aquarium / Decoration / Hardscape / 18 Lbs. Color: Brown, Condition: New. Listed at 58.50 USD. Dragon Stone Ohko Aquascaping Rocks 18 lbs. Mix Size Box at $3.25 / Lb. with Free USPS Expedited ShippingDragon Stone (also known as OhkoStone) is named such for its unique texture that mimics a dragon's scales. Natural dragon stones take their name from their unusual greenish brown coloring and uneven, rippled surface texture. Dragon Stone has become very popular with Aquascaping aquariums where the main focus is on the rocks and the plants complement the overall setup.Size Estimate:Small Stones 3” to 5”approx.Medium Stones 5” to 8”approx.Large Stones 8” to 12”approx.You will get over 18 Lbs box of Small, Medium and Large size Dragon stones(All weights are approximate and rocks vary in width and height.)NOTE: All stones need gentle washing before application. Rocks in the photos are for example only. The actual will be Dragon rocks but differ in shape.