This means it can scratch materials like glass (hardness 5.5), but it can be scratched by steel (hardness 5.5).

The hardness of sandstone can vary depending on the specific minerals that make up the stone.

Here's a breakdown of Mohs hardness:

* Mohs Hardness Scale: This scale measures the scratch resistance of minerals.

* Lower Numbers: Indicate softer materials that are easily scratched.

* Higher Numbers: Indicate harder materials that are more resistant to scratching.

It's important to note that the Mohs hardness scale is relative. A material with a hardness of 7 isn't exactly seven times harder than a material with a hardness of 1.