Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Category
Metamorphic And Igneous Rocks
Browse metamorphic and igneous rocks specimens identified by the Rock Identifier community.
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Garnetiferous Pegmatite
Pegmatite with Almandine Garnet and Muscovite
igneous
Pyrite in Quartz Matrix
Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz-bearing rock fragment
Likely quartz (SiO₂) with iron-oxide staining and possible feldspar/matrix minerals
mineral
Likely rough garnet-bearing rock
Possibly almandine garnet in a metamorphic host; exact identification is uncertain from this photograph
metamorphic
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Blue-gray feldspar-rich rock, likely labradorite-bearing gneiss or anorthosite
Plagioclase feldspar (albite–anorthite series), possibly with labradorite; exact rock identification is uncertain from one photo
metamorphic
Mixed beach pebbles; likely quartzite, granite, and iron-stained metamorphic rock
Predominantly quartzite (SiO₂), granite (quartz–feldspar–mica), and weathered iron-rich rock
metamorphic and igneous rocks
Sapphire
Corundum (Al2O3)
mineral
Gold
Gold (Au)
Mineral
Ruby
Corundum (Al2O3:Cr)
gemstone
Blue Sapphire
Corundum (Al2O3)
gemstone
Ruby
Corundum (Al2O3:Cr)
gemstone
Sugilite
KNa2(Fe,Mn,Al)2Li3Si12O30
mineral
Ruby
Corundum (Al2O3:Cr)
gemstone
Corundum
Aluminium oxide (Al2O3)
mineral
Ruby
Corundum (Al2O3)
gemstone
Ruby Ring
Corundum (Al2O3)
gemstone
Ruby
Corundum (Al2O3)
gemstone
Serafina (Serafinite / Clinochlore)
Clinochlore (Mg5Al)(AlSi3O10)(OH)8
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
gemstone
Green Sapphire
Corundum (Al2O3)
gemstone
Garnet
Silicate mineral group (e.g., Almandine, Fe3Al2(SiO4)3)
mineral
Corundum
Aluminium oxide (Al2O3)
mineral
Corundum
Aluminium oxide, Al2O3
mineral
Ruby
Corundum (Al2O3:Cr)
gemstone
Yellow Sapphire
Corundum (Al2O3)
gemstone
Ruby
Corundum (Al2O3:Cr)
gemstone
Ruby
Corundum (Al2O3:Cr)
gemstone