Pyrite
Iron Sulfide (FeS2)
mineral
Category
Metamorphic And Igneous Rocks
Browse metamorphic and igneous rocks specimens identified by the Rock Identifier community.
Learn about Metamorphic And Igneous Rocks in the encyclopedia
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Citrine
Silicon Dioxide (SiO2) - Macrocrystalline Quartz variety
mineral
Greenstone
Metabasalt / Greenschist
metamorphic
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Tumbled yellow quartz (likely citrine or yellow chalcedony)
Quartz, SiO₂; variety uncertain from image
mineral
Epidote in Matrix (Dragon Stone variant)
Epidote with Quartz/Feldspar (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Feldspar
Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)
mineral
Quartz (likely milky/rose quartz variety)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Gneiss
Metamorphic Gneiss
metamorphic
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Schist
Metamorphic rock (Schist)
metamorphic
Weathered quartz-rich rock, possibly milky quartz or quartz-bearing granite
Quartz (SiO₂), potentially with feldspar and iron-oxide staining
mineral
Tumbled ruby-bearing corundum (probable)
Corundum, aluminum oxide (Al₂O₃), colored red by chromium; possibly ruby
gemstone
Pink Quartz (Rose Quartz variant)
Silicon Dioxide (SiO2)
mineral
Labradorite
(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)
mineral
Schist (Chlorite or Mica-rich)
Chlorite Schist
metamorphic
Schist
Chlorite/Mica Schist
metamorphic
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Magnetite or Magnetic Iron Ore
Magnetite (Fe3O4)
mineral
Mica Schist
Metamorphic rock predominantly composed of muscovite or biotite with quartz and feldspar
metamorphic
Blue Sapphire (in a faceted jewelry setting)
Corundum (Al2O3) with trace Iron and Titanium
mineral
Gneiss
Foliated Metamorphic Rock
metamorphic
Garnet
Almandine/Pyrope Garnet (X3Y2(SiO4)3)
gemstone
Almandine Garnet
Iron aluminum silicate (Fe3Al2(SiO4)3)
mineral
Garnet
Almandine formula: Fe3Al2(SiO4)3
mineral
Tumbled dark pebble, likely basalt
Basalt, a fine-grained mafic volcanic rock composed mainly of plagioclase, pyroxene, and commonly olivine
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with traces of Titanium, Iron, or Manganese
mineral
Mica
Phlogopite or Biotite group (KMg3(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
mineral
Lapis Lazuli
Lapis Lazuli (Rock containing Lazurite, Calcite, and Pyrite)
metamorphic
Muscovite (Mica)
Muscovite - KAl2(AlSi3O10)(OH)2
mineral
Epidote
Epidote {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
mineral
Micaceous Rock (likely Muscovite Schist/Gneiss or a Muscovite-rich Specimen)
Predominantly Muscovite (KAl2(AlSi3O10)(F,OH)2), often found in rocks like Muscovite Schist or Muscovite Gneiss.
Metamorphic, Mineral (within a rock type)
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
metamorphic
Black Tourmaline
Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)
mineral