Oxide (Cryptocrystalline Quartz)
Agate
SiO₂
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150
Minerais
7
Sistemas Cristalinos
10
Escala de Dureza
Óxido
Alexandrita
BeAl₂O₄
Silicate (Garnet Group)
Almandine
Fe₃Al₂(SiO₄)₃
Organic Gemstone
Amber
C₁₀H₁₆O (approx)
Silicato
Ametista
SiO₂
Silicate (Nesosilicate)
Andalusite
Al₂SiO₅
Mineraloid (Biogenic Gemstone)
Ammolite
CaCO₃ (with organic binding)
Fosfato
Apatita
Ca₅(PO₄)₃(F,Cl,OH)
Silicate (Quartz Variety)
Ametrine
SiO₂
Ciclossilicato
Água-marinha
Be₃Al₂Si₆O₁₈
Carbonate
Aragonite
CaCO₃
Sulfide
Arsenopyrite
FeAsS
Silicate (Pyroxene Group - Inosilicate)
Augite
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)₂O₆
Silicate (Quartz Variety)
Aventurine
SiO₂
Carbonato
Azurita
Cu₃(CO₃)₂(OH)₂
Sulfate
Baryte (Barite)
BaSO₄
Silicate
Beryl
Be₃Al₂(SiO₃)₆
Silicate (Mica Group - Phyllosilicate)
Biotite
K(Mg,Fe)₃(AlSi₃O₁₀)(OH)₂
Native Element
Bismuth
Bi
Óxido (Quartzo Criptocristalino)
Heliotrópio (Pedra de Sangue)
SiO₂
Sulfide
Bornite
Cu₅FeS₄
Silicate (Pyroxene Group)
Bronzite
(Mg,Fe)₂Si₂O₆
Rock (Sedimentary/Volcanic)
Bumblebee Jasper
CaCO₃ (Limestone Matrix with Sulfur and Arsenic)
Silicate (Chalcedony Variety)
Carnelian
SiO₂
Carbonate
Calcite
CaCO₃
Silicate (Phyllosilicate)
Cavansite
Ca(VO)Si₄O₁₀·4H₂O
Sulfato
Celestina (Celestite)
SrSO₄
Silicate (Microcrystalline Quartz)
Chalcedony
SiO₂
Sulfide
Chalcopyrite
CuFeS₂
Silicate (Inosilicate)
Charoite
K(Ca,Na)₂Si₄O₁₀(OH,F)·H₂O
Filossilicato
Crisocola
Cu₂H₂Si₂O₅(OH)₄
Silicate (Chalcedony Variety)
Chrysoprase
SiO₂
Sulfide
Cinnabar
HgS
Sulfide
Cobaltite
CoAsS
Carbonate (Calcite Variety)
Cobaltocalcite
(Ca,Co)CO₃
Native Element
Copper
Cu
Silicate (Cyclosilicate)
Cordierite (Iolite)
(Mg,Fe)₂Al₃(AlSi₅O₁₈)
Óxido (Sílica)
Citrino
SiO₂
Oxide
Corundum
Al₂O₃
Rock (Limestone/Dolomite with Mineral Inclusions)
Chrysanthemum Stone
CaCO₃ (Matrix) with SrSO₄ or Al₂SiO₅ (Flowers)
Chromate
Crocoite
PbCrO₄
Silicate (Tectosilicate)
Danburite
CaB₂(SiO₄)₂
Silicate (Garnet Group - Andradite)
Demantoid
Ca₃Fe₂(SiO₄)₃
Elemento Nativo
Diamante
C
Silicate (Pyroxene Group)
Diopside
CaMgSi₂O₆
Silicate (Cyclosilicate)
Dioptase
CuSiO₃·H₂O
Carbonate
Dolomite
CaMg(CO₃)₂
Ciclossilicato
Esmeralda
Be₃Al₂(SiO₃)₆
Silicate (Sorosilicate)
Epidote
Ca₂Al₂(Fe³⁺;Al)(SiO₄)(Si₂O₇)O(OH)
Silicate (Nesosilicate)
Euclase
BeAlSiO₄(OH)
Silicate (Tectosilicate)
Feldspar
KAlSi₃O₈ - NaAlSi₃O₈ - CaAl₂Si₂O₈
Silicate (Cyclosilicate)
Eudialyte
Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂
Haleto
Fluorite
CaF₂
Phosphate (Apatite Group)
Fluorapatite
Ca₅(PO₄)₃F
Sulfide
Galena
PbS
Nesossilicato
Granada
X₃Y₂(SiO₄)₃
Oxide (Hydroxide)
Goethite
α-FeO(OH)
Elemento Nativo
Ouro
Au
Silicate (Beryl Group)
Goshenite
Be₃Al₂(SiO₃)₆
Silicate (Garnet Group)
Grossular
Ca₃Al₂(SiO₄)₃
Silicate (Tectosilicate - Sodalite Group)
Hackmanite
Na₈Al₆Si₆O₂₄(Cl,S)₂
Sulfate
Gypsum
CaSO₄·2H₂O
Halide
Halite (Rock Salt)
NaCl
Silicate (Beryl Group)
Heliodor
Be₃Al₂(SiO₃)₆
Óxido
Hematite (Hematita)
Fe₂O₃
Silicate (Sorosilicate)
Hemimorphite
Zn₄Si₂O₇(OH)₂·H₂O
Silicate (Spodumene Variety)
Hiddenite
LiAl(SiO₃)₂
Silicate (Amphibole Group - Inosilicate)
Hornblende
(Ca,Na)₂–₃(Mg,Fe,Al)₅(Al,Si)₈O₂₂(OH,F)₂
Silicate (Borosilicate)
Howlite
Ca₂B₅SiO₉(OH)₅
Silicate (Cordierite)
Iolite
Mg₂Al₄Si₅O₁₈
Silicate (Pyroxene Group)
Jadeite
NaAlSi₂O₆
Silicate (Spodumene Variety)
Kunzite
LiAl(SiO₃)₂
Rock (Silicified Volcanic Rhyolite)
Kambaba Jasper
SiO₂ (with extensive impurities)
Nessossilicato
Cianite (Distena)
Al₂SiO₅
Inossilicato (Silicato)
Jade
NaAlSi₂O₆ (Jadeíte) / Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ (Nefrite)
Oxide (Chalcedony)
Jasper
SiO₂
Tectossilicato
Labradorita
(Ca,Na)(Al,Si)₄O₈
Rocha Metamórfica
Lápis-lazúli
(Na,Ca)₈(AlSiO₄)₆(S,SO₄,Cl)₁₋₂ (Rocha complexa contendo lazurite)
Silicate (Pectolite Variety)
Larimar
NaCa₂Si₃O₈(OH)
Rock (Feldspar-rich Igneous Rock)
Larvikite
(Na,K)AlSi₃O₈ - CaAl₂Si₂O₈
Oxide (Hydroxide)
Lepidocrocite
γ-FeO(OH)
Silicate (Mica Group)
Lepidolite
K(Li,Al)₃(Al,Si,Rb)₄O₁₀(F,OH)₂
Mineraloid (Impact Glass / Tektite)
Libyan Desert Glass
SiO₂
Carbonate
Magnesite
MgCO₃
Carbonato
Malaquita
Cu₂CO₃(OH)₂
Native Element
Meteorite (Iron-Nickel)
Fe,Ni (Alloy)
Sulfide
Marcasite
FeS₂
Silicate (Phyllosilicate)
Mica
X₂Y₄–₆Z₈O₂₀(OH,F)₄ (General Formula)
Mineraloid (Tektite / Impact Glass)
Moldavite
SiO₂ (+ Al₂O₃)
Tectossilicato (Feldspato)
Pedra da Lua
(Na,K)AlSi₃O₈
Ciclossilicato
Morganita
Be₃Al₂Si₆O₁₈
Rock (Metamorphic)
Nuummite
(Mg,Fe)₇Si₈O₂₂(OH)₂ (Anthophyllite) & (Mg,Fe)₇Si₈O₂₂(OH)₂ (Gedrite)
Silicate (Amphibole Group)
Nephrite (Jade)
Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂
Silicate (Nesosilicate)
Olivine
(Mg,Fe)₂SiO₄
Silicate (Mica Group - Phyllosilicate)
Muscovite
KAl₂(AlSi₃O₁₀)(OH)₂
Mineraloide (Vidro Vulcânico)
Obsidiana
SiO₂ + MgO, Fe₃O₄ (Vidro de silicato complexo)
Óxido (Quartzo Criptocristalino)
Ónix
SiO₂
Mineraloide
Opala
SiO₂·nH₂O
Silicate (Feldspar Group - Potassium)
Orthoclase
KAlSi₃O₈
Rock (Meteorite)
Pallasite (Stony-Iron Meteorite)
Fe,Ni (Alloy) + (Mg,Fe)₂SiO₄ (Olivine)
Nesossilicato
Peridoto
(Mg,Fe)₂SiO₄
Silicate (Chalcedony / Quartz)
Pietersite
SiO₂ (with amphibole inclusions)
Silicate (Feldspar Group - Tectosilicate)
Plagioclase
(Na,Ca)Al(Al,Si)Si₂O₈
Silicate (Nesosilicate)
Phenakite
Be₂SiO₄
Silicate (Beryl Group - Cyclosilicate)
Pezzottaite
Cs(Be₂Li)Al₂Si₆O₁₈
Native Element
Platinum
Pt
Filossilicato
Prehnite (Prehnita)
Ca₂Al(AlSi₃O₁₀)(OH)₂
Silicate (Quartz Variety)
Prasiolite
SiO₂
Phosphate
Purpurite
Mn³⁺PO₄
Sulfureto
Pirite
FeS₂
Silicate (Garnet Group)
Pyrope
Mg₃Al₂(SiO₄)₃
Silicato
Quartzo
SiO₂
Carbonato
Rodocrosita
MnCO₃
Silicate (Garnet Group)
Rhodolite
(Mg,Fe)₃Al₂(SiO₄)₃
Inossilicato
Rodonita
(Mn,Fe,Mg,Ca)SiO₃
Óxido (Sílica)
Quartzo Rosa
SiO₂
Óxido (Sílica)
Cristal de Rocha (Quartzo Incolor)
SiO₂
Óxido
Rubi
Al₂O₃:Cr
Oxide
Rutile
TiO₂
Óxido
Safira
Al₂O₃
Silicate (Tectosilicate / Zeolite Group)
Scolecite
CaAl₂Si₃O₁₀·3H₂O
Sulfate (Gypsum Variety)
Selenite
CaSO₄·2H₂O
Mineraloid
Shungite
C (Amorphous Carbon)
Silicate (Nesosilicate)
Sillimanite
Al₂SiO₅
Elemento Nativo
Prata
Ag
Carbonate
Smithsonite
ZnCO₃
Silicate (Chlorite Group)
Seraphinite
(Mg,Fe²⁺)₅Al(Si₃Al)O₁₀(OH)₈
Óxido (Sílica)
Quartzo Fumê (Quartzo Fumado)
SiO₂
Tectossilicato (Feldspatoide)
Sodalite (Sodalita)
Na₈(Al₆Si₆O₂₄)Cl₂
Silicate (Garnet Group)
Spessartine
Mn₃Al₂(SiO₄)₃
Sulfide
Sphalerite
(Zn,Fe)S
Óxido
Espinela
MgAl₂O₄
Silicate (Nesosilicate)
Staurolite
Fe²⁺₂Al₉O₆(SiO₄)₄(O,OH)₂
Silicate (Cyclosilicate)
Sugilite
KNa₂(Fe,Mn,Al)₂Li₃Si₁₂O₃₀
Silicate (Nesosilicate)
Sphene (Titanite)
CaTiSiO₅
Tectossilicato (Feldspato Plagioclase)
Pedra do Sol
(Ca,Na)(Al,Si)₄O₈
Silicate (Pyroxene Group)
Spodumene
LiAl(SiO₃)₂
Sorossilicato
Tanzanita
Ca₂Al₃(SiO₄)₃(OH)
Mineraloid (Impact Glass)
Tektite
SiO₂ (with Al, Fe, Ca, Na, K, Mg)
Óxido (Sílica)
Olho de Tigre
SiO₂
Nesossilicato
Topázio
Al₂SiO₄(F,OH)₂
Ciclossilicato
Turmalina
AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z (Borosilicato extremamente complexo)
Silicate (Garnet Group - Grossular)
Tsavorite
Ca₃Al₂(SiO₄)₃
Fosfato
Turquesa
CuAl₆(PO₄)₄(OH)₈·4H₂O
Silicate (Garnet Group)
Uvarovite
Ca₃Cr₂(SiO₄)₃
Silicate (Tectosilicate)
Tugtupite
Na₄AlBeSi₄O₁₂(Cl,S)
Phosphate (Apatite Group)
Vanadinite
Pb₅(VO₄)₃Cl
Molybdate
Wulfenite
PbMoO₄
Nesossilicato
Zircão
ZrSiO₄
Silicate (Epidote Group)
Zoisite
Ca₂Al₃(SiO₄)₃(OH)