Mohs' scale

Mohs’ scale

A scale which rates the scratch hardness of a mineral on a scale of 1 (talc) to 10 (diamond).
References in periodicals archive ?
On these pages were pictures of minerals along Mohs' Scale of hardness from 'SOFT' to 'HARD' (i.
This is an error since hardness, especially in the context of Mohs' scale, refers specifically to mineral hardness.
On the Mohs' Scale of Hardness, tanzanite registers a 6.