You searched for: “abrasive
A substance used for cutting and polishing or for removing small amounts of the surface of hard materials.

There are two types: natural and artificial abrasives, and their hardness is measured using the Mohs scale (available in this list), a scale used to measure the hardness of minerals, with talc at zero and diamond at ten. Each mineral on the scale is hard enough to scratch the one below it in the scale.

This entry is located in the following unit: Geology or Related Geological Terms + (page 1)