Mohs scale of mineral hardness integrity, they are not considered "scratches" for the determination of a Mohs scale number. The Mohs scale is a purely ordinal scale. For example, corundum (9) is twice as hard as topaz (8), but diamond (10) is four times as hard as corundum. The table below shows the comparison with the absolute hardness measured by a sclerometer, with pictorial examples. On the Mohs scale, a streak plate (unglazed porcelain) has a hardness of approximately 7.0. Using these ordinary materials of known hardness can be a simple way to approximate the position of a mineral on the scale. The table below
Marble Rocks one side to another. This gave the Gorge its local name- Bandar Kudni (meaning- Monkey's jumping place). The white marbles are predominantly rich in magnesium and are closer in hardness to soap stone. This softness allows them to be carved. The area also contains blue and brown colored marble. The area has many tourist activities. There is a cable car to take visitors across the gorge, row boats for guided tours of the river downstream of the falls, and many small shops filled with crafts made from the local materials. Marble Rocks The Marble Rocks is an area along the