Home  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 |
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