Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Mineral (Synthetic)
Browse mineral (synthetic) specimens identified by the Rock Identifier community.
Learn about Mineral (Synthetic) in the encyclopedia
View all →
Celestine (or Celestite)
Strontium sulfate (SrSO4)
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Amethyst Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Bornite
Bornite (Cu5FeS4)
mineral
Beryl (likely Aquamarine or Green Beryl)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Tourmalinated Quartz
SiO2 with NaFe3+3Al6(BO3)3Si6O18(OH)4 inclusions
Mineral
Moonstone
Orthoclase (Potassium aluminum silicate - KAlSi3O8)
mineral
Emerald In Matrix (Quartz/Calcite)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Emerald / Green Beryl
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Agate (specifically Waterline or Onyx-type Agate)
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Blue Lace Agate (with Amethyst Geode center)
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
mineral
Greenschist
Greenschist (Chlorite-Epidote-Actinolite Schist)
metamorphic
Gneiss
Gneiss
metamorphic
Epidote (Greenstone)
Calcium aluminum iron silicate hydroxide Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)
metamorphic
Pink Granite
Felsic intrusive igneous rock
igneous
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
metamorphic
Diorite
Diorite (an intrusive igneous rock)
igneous
Diorite
Phaneritic Intermediate Plutonic Rock
igneous
Vesicular Basalt with Xenocrysts
Mafic Igneous Plutonic/Extrusive Complex
igneous
Granitic Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Granite (Pegmatitic)
Phaneritic Felsic Igneous Rock
igneous
Mica Schist
Mica Schist (predominantly Muscovite or Biotite)
metamorphic
Basalt
Mafic Extrusive Igneous Rock
Igneous
Mica Schist
Mica Schist (primarily composed of Muscovite/Biotite)
metamorphic
Basalt
Basalt (composition of plagioclase feldspar and pyroxene)
igneous
Eudialyte with Syenite
Eudialyte: Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
igneous
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Milky Quartz with Iron Staining and Matrix
Silicon Dioxide (SiO2)
mineral
Milky Quartz (Water-Worn Pebble)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Arenite (mainly SiO2 with varying cements)
sedimentary
Turquoise (possible Howlite imitation)
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Variscite (or potentially a turquoise/variscite matrix cabochon, or an impression jasper)
AlPO4·2H2O (Variscite) or related phosphate/silicate material depending on exact composition
Mineral
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Howlite and Purpurite druzy
Calcium Borosilicate Hydroxide (Howlite) and Manganese Phosphate (Purpurite)
mineral