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Chemical Formulas of Gemstones
Chemical Formulas of Gemstones
| Beryl | Be3Al2Si6O18 |
| Chrysoberyl | BeAl2O4 |
| Coral | CaCo3 |
| Corundum | Al2O3 |
| Diamond | C |
| Feldspar | Plagioclase Series: (Na,Ca)Al(Al,Si)Si2O8 Alkali Feldspar Group: Mixtures of Orthoclase -KAlSi3O8 and Albite -NaAlSi3O8 |
| Garnet | Almadine - Fe3Al2(SiO 4 ) 3 Andradite - Ca3Fe2(SiO 4 ) 3 Grossular - Ca3Al2(SiO 4 ) 3 Pyrope - Mg3Al2(SiO 4 ) 3 Spessartine - Mn3Al2(SiO 4 ) 3 Uvarovite - Ca3Cr2(SiO 4 ) 3 |
| Jade | Nephrite - Ca2(Mg,Fe)5(Si8O22) (OH)2 Jadeite - NaAl(Si2O6) |
| Lapis Lazuli | Lazurite - (Na,Ca)8(AlSiO4 ) 6 (SO4,S,Cl)2 |
| Opal | Hydrated Silica - SiO2.nH2O |
| Peridot | (Mg,Fe)2(SiO4) |
| Quartz | SiO2 |
| Spinel | MgAl2O4 |
| Topaz | Al2SiO4(F,OH)2 |
| Tourmaline | XY3Al6(BO3 ) 3 (Si6O18) (OH4) [X is usually Na but may be replaced by Ca; Y is one of several metal ions] |
| Turquoise | CuAl6(PO4 ) 4 (OH)8.4H2O |
| Zircon | ZrSio4 |
