Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Category
Mineral (Native Element)
Browse mineral (native element) specimens identified by the Rock Identifier community.
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Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Sunstone (Orthoclase Feldspar variant)
Orthoclase (KAlSi3O8) with inclusions
mineral
Eudialyte
Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Mineral
Blue Goldstone
Aventurine Glass (Silicon Dioxide with metal inclusions)
man-made glass mineral simulant
Schorl (Black Tourmaline) in Pegmatite
Sodium Iron Aluminum Borosilicate (NaFe3Al6(BO3)3Si6O18(OH)4)
igneous
Auriferous Quartz (Gold-bearing Quartz)
Silicon Dioxide (SiO2) with Elemental Gold (Au)
mineral
Syenite
Syenite (Phaneritic Igneous Rock)
igneous
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Strawberry Quartz (Quartz with Hematite inclusions)
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
mineral
Amethyst
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz with Siderite
Silicon Dioxide (SiO2) with Iron(II) Carbonate (FeCO3)
mineral
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Granitic Pegmatite with Schorl Tourmaline
Granitic Pegmatite (Schorl: NaFe3Al6(BO3)3Si6O18(OH)4)
igneous
Petrified Wood
Silicified wood (primarily SiO2)
sedimentary
Banded Calcite (often sold as 'Mexican Onyx')
Calcite (Calcium Carbonate, CaCO3)
Mineral / Sedimentary Rock
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Feldspar Pegmatite
Pegmatitic Potassium Feldspar (KAlSi3O8) with Quartz and Mica
igneous
Amazonite
Microcline (KAlSi3O8) with Trace Elements
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with Fe2+ trace elements)
Mineral
Coquina / Shelly Sandstone
Calcareous Sandstone / Coquina
sedimentary
Ruby
Corundum (mineral species), variety: Ruby (Al2O3 with Cr3+ as the chromophore)
Mineral
Blue calcite (probable)
Calcite, calcium carbonate (CaCO₃)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Amethyst Geode
Silicon Dioxide (SiO2) with trace Iron (Fe3+) impurities
mineral
Amethyst
Silicon dioxide (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone Concretion
Septarian or Carbonate-cemented Sandstone Concretion
sedimentary
Serpentinite
Serpentinite (composed mainly of Serpentine-group minerals: (Mg, Fe)3Si2O5(OH)4)
metamorphic
Granite
Phaneritic Plutonic Felsic Rock (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 + SiO2)
igneous
Banded Chert / Mookaite Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Polished rose quartz
Rose quartz (quartz), SiO₂
mineral
Pink quartz (likely rose quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Blue calcite (probable)
Calcite, CaCO₃
mineral
Rose quartz
Quartz, silicon dioxide (SiO₂)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Green Tourmaline (Verdelite)
Elbaite (Complex Borosilicate: Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)
mineral
Amethyst
Quartz (Silicon Dioxide, SiO2) with iron impurities
mineral
Pink Tourmaline in Quartz Matrix
Elbaite (Na(Li,Al)3Al6(Si6O18)(BO3)3(OH)4) in Quartz (SiO2)
mineral