Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mixed: Igneous And Sedimentary
Browse mixed: igneous and sedimentary specimens identified by the Rock Identifier community.
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Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Yellow Quartz (Citrine or Iron-Stained Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Yellow Quartz (Citrine or Citrine-colored Quartz)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Yellow Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Rainbow Moonstone
White Labradorite (formula: (Na,Ca)(Al,Si)4O8)
mineral
Black Sapphire
Corundum (Al2O3 with inclusions of hematite or ilmenite)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Moonstone
Orthoclase (KAlSi3O8) with inclusions of Albite (NaAlSi3O8)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Smoky Quartz
Smoky Quartz (SiO2 - Silicon Dioxide with trace impurities of aluminum)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Bornite
Bornite (Cu5FeS4)
mineral
Granite Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Foliated Gneiss (River-Worn Pebble)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Feldspathic Gneiss
Feldspathic Gneiss (High-grade regional metamorphic rock)
metamorphic
Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
Gneiss
Gneiss (High-grade regional metamorphic rock)
Metamorphic
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz (Crystal Cluster)
Silicon Dioxide (SiO2) - Quartz Variety
mineral
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Quartz Geode (Nodule)
Silicon Dioxide (SiO2)
sedimentary or igneous
Carnelian Agate
Silicon dioxide (SiO2) - variety of Chalcedony
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Banded Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz (likely tumbled or naturally water-worn)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Folded Schist / Gneiss (Metamorphic Rock)
Regional Metaphoric Folded Outcrop (predominantly Schist/Gneiss)
metamorphic
Quartz (specifically Milky Quartz/Quartzite)
Silicon Dioxide (SiO2)
Mineral
River Rock (Granitic Gneiss)
Foliated Granitic Gneiss
metamorphic