| Substance/Mineral | Mohs Hardness | Fomula | Catalog Prefix
|
| Diamond | 10.00 | (C) Carbon | di
|
| Moissanite | 9.25 | (SiC) silicon carbide | mo |
| Corundum | 9.00 | (Al2O3) aluminium oxide | co |
| - Sapphire | 9.00 | (Al2O3) | co |
| - Ruby | 9.00 | (Al2O3) | co |
| Chrysoberyl | 8.50 | (BeAl2O4) | al |
| - Alexandrite | 8.50 | | al |
| - Cymophane | 8.50 | | al |
| Holtite | 8.50 | ( (Ta0.6◻0.4)Al6BSi3O18(O,OH)2.25 ) | ho
|
| Topaz | 8.00 | (Al2SiO4(F,OH)2) | to
|
| Emerald | 7.75 | (Be3Al2(SiO3)6) | em
|
| Tourmaline | 7.25 | *+* (Si6O18(BO3)3(OH)3) *+* | to |
| [+] Expand Tourmaline types |
| Quartz | 7.00 | (SiO2) | qu |
| [+] Expand Quartz types |
| Olivine | 6.75 | ((Mg,Fe)2SiO4) | ol
|
| Silicon | 6.50 | (Si) | si
|
| Pyrite | 6.25 | (FeS2) | py
|
| Microcline | 6.25 | (KAlSi3O8) |
| Albite | 6.25 | (NaAlSi3O8) |
| Epidote | 6.00 | ({Ca2}{Al2Fe3+}(SiO4)(Si2O7)O(OH)) | ep
|
| Labradorite | 6.00 | ((Ca,Na)(Al,Si)4O8) | la
|
| Unakite | 6.00 | pink orthoclase, green epidote, quartz | uk
|
| Augite | 5.75 | ( (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6 ) | ?? |
| Hornblende | 5.50 | ( Ca2(Mg,Fe,Al)5(Al,Si)8O22(OH)2 ) |
| Apatite | 5.00 | (Ca5(PO4)3(F,Cl,OH)) | ap
|
| Fluorite | 4.00 | (CaF2) | fl
|
| Iron | 4.00 | (Fe) | fe |
| Platinum | 3.50 | (Pt) | pt
|
| Dolomite | 3.50 | (CaMg(CO3)2) | do
|
| Calcite (crystal) | 3.00 | (CaCO3) | ca
|
| - Limestone (rock) | 3.00 |
|
| Copper | 3.00 | (Cu) | cu |
| Gold | 2.75 | (Au) | au
|
| Halite | 2.50 | (NaCl) | ha
|
| Mica | 2.50 | (AB2–3(X, Si)4O10(O, F, OH)2) | mi |
| Bismuth | 2.25 | (Bi) | bi
|
| Muscovite | 2.25 | ( KAl2(AlSi3O10)(F,OH)2 ) | ?? |
| Calcium | 2.00 | (Ca) | cm
|
| Gypsum | 2.00 | (CaSO4·2H2O) | gy
|
| Lead | 1.50 | (Pb) | le
|
| Talc | 1.00 | | ta
|