Scale for measuring the hardness of a mineral. The Mohs scale also measures hardness, except the absolute hardness scale has its numbers in proportion. Only scientists use the absolute hardness scale; mineral collectors measure hardness using the Mohs scale.

It is a scale to measure the hardness of a mineral. It is used by scientists as it has its numbers in proportion. Mineral collectors measure hardness using the Mohs scale.

Aquamarine Abrasive finish