Fortune stones ltd, since 1996, produces wide range of slate granite. Himachal black is a part of those products. One side of this slate granite is calibrated and other side is polished. Thickness in one side is calibrated and other side is polished. Length of this side is about 11 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 available