Silicate
Quartz
SiO₂
Discover the World of Minerals
Explore the fascinating properties, uses, and locations of Earth's most remarkable minerals.
50
Minerals
7
Crystal Systems
10
Hardness Scale
Native Element
Diamond
C
Native Element
Gold
Au
Oxide
Ruby
Al₂O₃:Cr
Cyclosilicate
Emerald
Be₃Al₂(SiO₃)₆
Oxide
Sapphire
Al₂O₃
Native Element
Silver
Ag
Nesosilicate
Topaz
Al₂SiO₄(F,OH)₂
Silicate
Amethyst
SiO₂
Mineraloid
Opal
SiO₂·nH₂O
Nesosilicate
Peridot
(Mg,Fe)₂SiO₄
Nesosilicate
Garnet
X₃Y₂(SiO₄)₃
Cyclosilicate
Aquamarine
Be₃Al₂Si₆O₁₈
Tectosilicate (Feldspar)
Moonstone
(Na,K)AlSi₃O₈
Phosphate
Turquoise
CuAl₆(PO₄)₄(OH)₈·4H₂O
Nesosilicate
Zircon
ZrSiO₄
Sorosilicate
Tanzanite
Ca₂Al₃(SiO₄)₃(OH)
Sulfide
Pyrite
FeS₂
Halide
Fluorite
CaF₂
Carbonate
Malachite
Cu₂CO₃(OH)₂
Oxide
Hematite
Fe₂O₃
Tectosilicate
Labradorite
(Ca,Na)(Al,Si)₄O₈
Oxide
Alexandrite
BeAl₂O₄
Cyclosilicate
Morganite
Be₃Al₂Si₆O₁₈
Oxide (Silica)
Citrine
SiO₂
Oxide
Spinel
MgAl₂O₄
Phosphate
Apatite
Ca₅(PO₄)₃(F,Cl,OH)
Carbonate
Azurite
Cu₃(CO₃)₂(OH)₂
Phyllosilicate
Chrysocolla
Cu₂H₂Si₂O₅(OH)₄
Inosilicate
Rhodonite
(Mn,Fe,Mg,Ca)SiO₃
Mineraloid (Volcanic Glass)
Obsidian
SiO₂ + MgO, Fe₃O₄ (Complex silicate glass)
Oxide (Silica)
Tiger's Eye
SiO₂
Metamorphic Rock
Lapis Lazuli
(Na,Ca)₈(AlSiO₄)₆(S,SO₄,Cl)₁₋₂ (Complex rock containing lazurite)
Cyclosilicate
Tourmaline
AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z (Extremely complex borosilicate)
Inosilicate (Silicate)
Jade
NaAlSi₂O₆ (Jadeite) / Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ (Nephrite)
Oxide (Cryptocrystalline Quartz)
Bloodstone (Heliotrope)
SiO₂
Oxide (Cryptocrystalline Quartz)
Onyx
SiO₂
Oxide (Silica)
Rock Crystal (Clear Quartz)
SiO₂
Oxide (Silica)
Smoky Quartz
SiO₂
Oxide (Silica)
Rose Quartz
SiO₂
Tectosilicate (Plagioclase Feldspar)
Sunstone
(Ca,Na)(Al,Si)₄O₈
Sulfate
Celestine (Celestite)
SrSO₄
Tectosilicate (Feldspathoid)
Sodalite
Na₈(Al₆Si₆O₂₄)Cl₂
Nesosilicate
Kyanite
Al₂SiO₅
Carbonate
Rhodochrosite
MnCO₃
Phyllosilicate
Prehnite
Ca₂Al(AlSi₃O₁₀)(OH)₂
Oxide (Cryptocrystalline Quartz)
Agate
SiO₂
Oxide (Chalcedony)
Jasper
SiO₂
Organic Gemstone
Amber
C₁₀H₁₆O (approx)
Carbonate
Calcite
CaCO₃