In 1812, German mineralogist, Friedrich Mohs developed a scale to measure the hardness of minerals. This scale is also used to measure the hardness of other materials, including tile and natural stone. The Moh’s Scale uses 10 fairly common minerals of known hardness and assigns them a value from 1 (softest) through 10 (hardest).

Talc has the lowest classification and is the softest mineral on the list at number 1. Diamond is the highest on the list at number 10 and is the hardest mineral known.

Moh’s Hardness Scale Mineral Compared to Flooring Materials
1 Talc resilient flooring (vinyl, asphalt tile)
2 Gypsum wood flooring
3 Calcite polished marble, laminate flooring
4 Fluorite black marble
5 Apatite glazed ceramic tile
6 Feldspar glazed ceramic tile 
7 Quartz quarry tile, glazed porcelain tile
8 Topaz unglazed porcelain tile
9 Corundum no flooring is this hard
10 Diamond no flooring is this hard