Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
mineral
Category
Igneous, Sedimentary, And Metamorphic
Browse igneous, sedimentary, and metamorphic specimens identified by the Rock Identifier community.
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Yellow Quartz / Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine/Yellow Jasper mix)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Pyrite in Matrix (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Milky Quartz (Common Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
mineral
Mica (Muscovite)
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Almandine Garnet
Almandine (Fe3Al2Si3O12)
mineral
Garnet
Garnet Group (e.g., Almandine Fe3Al2(SiO4)3 or Pyrope Mg3Al2(SiO4)3)
mineral
Mica
Muscovite / Biotite (Phyllosilicate group)
mineral
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Quartz Vein / Quartzite Specimens
Silicon Dioxide (SiO2)
mineral
Garnet amphibolite / Metamorphic Rock
Garnet Amphibolite (Hornblende - Almandine schist/gneiss)
metamorphic
Corundum (Sapphire/Ruby in Matrix)
Corundum (Al2O3)
mineral
Muscovite
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions
mineral
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Muscovite Mica
Muscovite: KAl2(AlSi3O10)(OH)2
mineral
Quartz (likely a clear or rock crystal variety)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Epidote
Calcium aluminum iron silicate (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Quartz
Quartz (SiO₂)
mineral
Greenschist
Chlorite schist
metamorphic
Cloud Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Cloudy Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Vein (Iron-stained)
Silicon Dioxide (SiO2) with limonite/hematite staining
mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
K-Feldspar (Microcline / Orthoclase)
Potassium Feldspar (KAlSi3O8)
mineral
Yellow Sapphire
Corundum (Al2O3)
gemstone
Sugilite
KNa2(Fe,Mn,Al)2Li3Si12O30
mineral
Labradorite
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral