Black Stone Used For Swimming Pool Decoration:1. Standard Size: 400x400mm, 400x800mm, 500x500mm, 500x1000mm, 600x300mm, 600x600mm, 600x900mm, 800x800mm 2. Thickness: 20mm,30mm,40mm,50mm etc 3. Finish: Flamed, Bush hammered, Antique, Natural Split, Chisled, etc 4. Usage: Mainly for hotels, plaza,parking, restaurants, monumental buildings,..