Mohs Scale
3LiLithium0.6
4BeBeryllium5.5
5BBoron9.3
6CCarbon0.5
11NaSodium0.5
12MgMagnesium2.5
13AlAluminium2.75
14SiSilicon6.5
16SSulphur2
19KPotassium0.4
20CaCalcium1.75
22TiTitanium6
23VVanadium7
24CrChromium8.5
25MnManganese6
26FeIron4
27CoCobalt5
28NiNickel4
29CuCopper3
30ZnZinc2.5
31GaGalium1.5
32GeGermanium6
33AsArsenic3.5
34SeSelenium2
37RbRubidium0.3
38SrStrontium1.5
40ZrZirconium5
41NbNiobium6
42MoMolybdenum5.5
44RuRuthenium6.5
45RhRhodium6
46PdPalladium4.75
47AgSilver2.5
48CdCadmium2
49InIndium1.2
50SnTin1.5
51SbAntimony3
52TeTellurium2.25
55CsCaesium0.2
56BaBarium1.25
57LaLanthanum2.5
58CeCerium2.5
59PrPraseodymium1.4
60NdNeodymium1.2
62SmSamarium1.4
63EuEuropium3.1
64GdGadolinium5.1
65TbTerbium2.3
66DyDysprosium1.8
67HoHolmium1.6
68ErErbium2
69TmThulium1.8
71LuLutetium2.6
72HfHafnium5.5
73TaTantalum6.5
74WTungsten7.5
75ReRhenium7
76OsOsmium7
77IrIridium6.5
78PtPlatinum3.5
79AuGold2.5
81TlThallium1.2
82PbLead1.5
83BiBismuth2.25
90ThThorium3
92UUranium6