Fortune stones ltd, since 1996, manufactures various types of slates granite. Copper is a part of those products. Copper slates granite`s one side is calibrated and one side is polished. Thickness in one side natural & one side calibrated and the length is almost 13 mm [+ / - 1 mm]. Smaller strips in the length between 15 cm to 30 cm and width between 7.5cm to 28 cm and thickness between 15-20 mm are also available.