... available:black,green,rusty,gray, yellow,white,antique colorFeatures:1. Natural slate with lower water absorption, hard, durable ... etc500x250mm , 400x200mm , 400x25mm300x300mm , 300x200mm , 300x15mmC: Sandstone culture stone or stone panel for wall decorationThickness: 15-25mm, 15-20mm, 20- ... or outside wall cladding or gardening etcQuality control:1.All natural slates are pure natural , amost ...