Granite & Marble Tiles 12x12x3/8" calibrated and grooved 20 stock granite colours and 12 marble colours to choose from in Tiles. Also available - Stainless Steel Tiles Standard Tiles are 12" x 12" x 3/4". Other sizes available on special order.All tiles are chamferred grooved and calibrated.Minimum order 500 sq. ft. per colour.First time order shipped within 4-6 weeks.Re-orders shipped within 2 weeks.