Altamura Pearl is an extra large, light gray tile has the look of a lime stone. It comes in soft gray color and  with a few veins in white. This tile’s design consists of two layers of graphics that create  a virtual depth on the 2 dimensional surface.  Therefore Altamura Pearl 30×60 tile looks exactly like a limestone. However, it still has all the perks of porcelain tile: Improved graphics, more modern style, stainless surface that doesn’t need maintenance. Rectified Porcelain Tile Made In Spain. .