Ammolite
Biogenic gemstone (Aragonite, CaCO3)
mineral
Category
Mineral (Gemstone)
Browse mineral (gemstone) specimens identified by the Rock Identifier community.
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Tumbled carnelian
Carnelian, a reddish-orange variety of chalcedony (microcrystalline quartz, SiO₂)
mineral
Clear quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Smoky Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
Emerald
Beryl (Be3Al2(SiO3)6)
gemstone
Emerald in Matrix
Beryl (Be3Al2Si6O18 with Chromium/Vanadium traces)
gemstone
Emerald (or possibly Green Glass / Slag)
Beryl (Be3Al2(SiO3)6)
gemstone
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Prehnite
Ca2Al(AlSi3O10)(OH)2
mineral
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
mineral
Peridot
Olivine ((Mg,Fe)2SiO4)
gemstone
White Quartz
Silicon Dioxide (SiO2)
mineral
Sunstone
Oligoclase (Plagioclase Feldspar), (Na,Ca)(Si,Al)4O8
mineral
Turquoise
Turquoise, CuAl6(PO4)4(OH)8·4H2O
mineral
Amethyst
Silicon dioxide (SiO2) with iron impurities
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Malachite with Chrysocolla
Copper carbonate hydroxide (Cu2CO3(OH)2) and Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Cubic Zirconia (Faceted)
Zirconium dioxide (ZrO2)
mineral
Blue Topaz
Aluminum Silicate Fluoride Hydroxide Al2SiO4(F,OH)2
mineral
Weathered Sedimentary Rock
Sedimentary Rock
Sedimentary
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Peridot
Olivine (Mg, Fe)2SiO4
mineral
Pink tourmaline crystal (likely polished or rough-cut)
Elbaite, Na(Li₁.₅Al₁.₅)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃
gemstone
Amazonite
Microcline (KAlSi3O8)
mineral
Citrine
Silicon Dioxide (SiO2)
gemstone
Prehnite
Ca2Al2Si3O10(OH)2
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18)
mineral
Quartz Crystal in Matrix
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Orange/Pink variety)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Purple Chalcedony
Silicon Dioxide (SiO2)
mineral