Petrified Wood
Silicified Wood (SiO2)
fossil
Category
Mineral (Native Element)
Browse mineral (native element) specimens identified by the Rock Identifier community.
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Granite Pegmatite with Muscovite Mica
Granite Pegmatite (Silicon Dioxide and complex silicates)
igneous
Blue Sapphire
Corundum (Al2O3 with Cr, Fe, and Ti trace elements)
gemstone
Petrified Wood
Silicified Wood (primarily Chalcedony/Quartz, SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Blue Topaz
Aluminum Silicate Fluoride Hydroxide - Al2SiO4(F,OH)2
gemstone
Granite
Granitic intrusive igneous rock
igneous
Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
Synthetic/Man-made glass (often mistaken for a mineral)
Ruby
Corundum (Al2O3 with Chromium trace elements)
mineral
Carved quartz (likely rose quartz and green aventurine/quartz)
Quartz, silicon dioxide (SiO₂); green material may be aventurine quartz or serpentine
gemstone
Amethyst
Silicon Dioxide (Quartz variety), SiO2
mineral
Sodalite
Sodium aluminum silicate chloride (Na8(Al6Si6O24)Cl2)
mineral
Chakra Stone (Composite / Man-made Bonded Gemstones)
Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)
Combined Minerals / Metaphysical stones
Chakra Stone Tower (Composite Multi-Mineral)
Crystalline Silicon Dioxide composite (SiO2) with various inclusions
mineral
Fossilized Bone (Petrified Bone)
Permineralized Vertebrate Remains
sedimentary
Granite
Granite (Felsic Plutonic Rock / SiO2 + Al2O3 + K2O + Na2O + CaO + FeO + MgO)
igneous
Granite
Felsic Intrusive Igneous Rock (SiO2, Al2O3, K2O, Na2O)
igneous
Amethyst and Rose Quartz Beads
Crystalline Quartz (SiO2) with trace elements
gemstone
Spinosaurus fossil (permineralized bone)
Spinosaurus aegyptiacus (Calcium phosphate mineralized with silica/sediment)
sedimentary
Ruby
Corundum (Al2O3 with chromium trace elements)
gemstone
Granite
Granite
Igneous
Banded Gneiss
Gneiss (Metamorphic rock of variable mineralogy, often quartz-feldspar base)
metamorphic
Blue-green fluorite (likely tumbled/polished)
Fluorite, calcium fluoride (CaF₂)
mineral
Eudialyte
Na15Ca6(Fe2+,Mn2+)3Zr3(Si,Nb)Si25O73(O,OH,H2O)3(Cl,OH)2
mineral
Granite (Weathered)
Plutonic Igneous Rock (Granitic)
igneous
Travertine (Tufa)
Terrestrial Sedimentary Limestone (CaCO3)
sedimentary
Granite
Phaneritic Intrusive Igneous Rock (primarily composed of SiO2, Al2O3, K2O, Na2O)
igneous
Charoite
Charoite (Complex silicate mineral rock)
metamorphic
Bauxite / Iron-rich Laterite
Laterite (principally Al(OH)3, Fe2O3, and SiO2)
sedimentary
Sunstone
Oligoclase (Plagioclase Feldspar) with inclusions - (Ca, Na)((Al, Si)4O8)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Blue Goldstone
Aventurine Glass
man-made glass
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral
Blue Quartz with Graphite/Tourmaline Inclusions
Silicon Dioxide (SiO2) with Carbon (C) or Schorl elements
mineral
Fossiliferous Shale (with Vertebrate Bones)
Laminated Mudstone containing Fossilized Bone (Apatite)
sedimentary
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(OH)2
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Raw Citrine
Citrine (Silicon Dioxide - SiO2)
mineral
Amethyst and Rose Quartz Beads
Crystalline Quartz (SiO2) with trace elements
gemstone
Rose Quartz
Silicon Dioxide with trace elements (SiO2 + Ti, Fe, or Mn)
mineral
Red Sandstone
Ferruginous Sandstone (SiO2 with Iron Oxide impurities)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary