Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Category
Mineral (Gemstone)
Browse mineral (gemstone) specimens identified by the Rock Identifier community.
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Sunstone
(Ca,Na)(Al,Si)4O8 (Oligoclase or Andesine)
mineral
Tanzanite
Blue Zoisite (Ca2Al3(SiO4)(Si2O7)O(OH))
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Garnet in Matrix (Schist or Quartz)
Almandine Garnet, Fe3Al2(SiO4)3
metamorphic
Raw yellow-brown crystal, likely citrine or honey calcite
Citrine: quartz (SiO₂); possible honey calcite: calcite (CaCO₃)
mineral
Amazonite
Microcline Feldspar (KAlSi3O8)
mineral
Likely raw epidote or altered amphibole crystal
Epidote, Ca₂(Al,Fe³⁺)₃(SiO₄)₃(OH); identification is tentative from the image
mineral
Tiger's Eye (with Hematite/Magnetite matrix)
Pseudomorph of Quartz after Crocidolite (SiO2 with FeOOH/Fe2O3)
metamorphic
Clear Quartz
Silicon dioxide (SiO2)
mineral
Amethyst Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
gemstone
Clear Quartz (Faceted)
Silicon Dioxide (SiO2)
gemstone
Red Aventurine (Strawberry Quartz / Sunstone Quartz)
Silicon Dioxide with Hematite/Goethite inclusions (SiO2)
mineral
Green Aventurine
Quartz (SiO2) with inclusions
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Carnelian (Chalcedony)
SiO2 (Silicon Dioxide with iron oxide inclusions)
gemstone
Quartz Fragment
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
gemstone
Amazonite
Microcline (KAlSi3O8 with traces of Lead)
mineral
Citrine Quartz
Macrocrystalline Quartz (SiO2)
mineral
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
mineral
Prehnite
Calcium aluminum silicate hydroxide, Ca2Al(AlSi3O10)(OH)2
mineral
Amazonite
Microcline (KAlSi3O8)
mineral
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Emerald
Beryl (Be3Al2(SiO3)6)
gemstone
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline (KAlSi3O8) with trace lead/water inclusions
mineral
Green Opal / Common Opal
Hydrated Silicon Dioxide (SiO2·nH2O)
mineral
Blue Apatite
Fluorapatite / Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
Amethyst (Scepter Quartz)
Silicon Dioxide (SiO2) with Iron impurities
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Opal
Hydrated amorphous silica, SiO2·nH2O
gemstone
Amazonite
Microcline feldspar (KAlSi3O8)
mineral
Amethyst
Quartz (Silicon Dioxide, SiO2)
gemstone
Amazonite
K(AlSi3O8) - Potassium Aluminum Silicate (variety of Microcline)
mineral
Chrysocolla
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Amazonite
Amazonite (KAlSi3O8)
mineral
Chrysocolla (in Host Rock)
Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
mineral