... marble,lavastone,sandstone,limestone,etc.2. Available in different colors and sizes,up to customer request.3. Color: grey, yellow, ... brown, pink, black, etc.4. Usage: Acceptable as outdoor and indoor landscaping products for decoration because of superior quality. Would ... Granite & Sandstone are very old and have been used along with rollers for grinding maize, rice and other grains,they are almost ...