Mohs scale
Related Words
mineralogygeologyhardnessscratchmineraldiamondtalccorundumtopazquartzorthoclasefluoriteapatitecalcitegypsumcrystalcrystallographyabrasionfrictiondurabilityresistancelithologypetrologygemologygemstoneprecioussemi-preciousscaleindexmeasurementratingclassificationstandardbenchmarktestprobeindentationsurfacetexturecompositionelementcompoundoxidesilicatecarbonatesulfatehalidecleavagefracturelusterstreakdensityspecific gravityrockorematrixinclusionfacetpolishgrindetchinggeologistmineralogistlaboratoryfieldworkstratigraphyigneoussedimentarymetamorphic