Smoky Quartz (Polished)
Silicon Dioxide (SiO2)
Category
Browse mineral (evaporite) specimens identified by the Rock Identifier community.
Smoky Quartz (Polished)
Silicon Dioxide (SiO2)
Amethyst
SiO2 (Silicon Dioxide)
Fairburn Agate
Cryptocrystalline Quartz (SiO2)
Botryoidal Chalcedony Geode
Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz
Orange Quartz with Epidote
Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate hydroxide (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Carnelian
Chalcedony (SiO2) with Iron Oxide impurities
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Prasiolite (Green Quartz)
Silicon Dioxide (SiO2) with iron impurities
Tiger's Eye
Pseudomorph of Macrocrystalline Quartz after Crocidolite (SiO2)
Graphic Granite
Graphic Granite (Granitic Pegmatite)
Amethyst
Silicon Dioxide (SiO2)
Agate
SiO2
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Amethyst (Tumbled Chips)
Amethyst (Silicon Dioxide with Iron impurities, SiO2)
Garnet
Almandine (Fe3Al2(SiO4)3)
Ocean Jasper
Spherulitic Chalcedony (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Aquamarine
Beryl (Be3Al2Si6O18 with Fe2+ impurities)
Copper Ore (with Azurite and Malachite)
Cuprite, Azurite (Cu3(CO3)2(OH)2), Malachite (Cu2(CO3)(OH)2)
Native Copper in Basalt
Amygdaloidal Basalt with Native Copper (Cu)
Moonstone (Tumbled)
Orthoclase Feldspar (KAlSi3O8) with inclusions of Albite
Milky Quartz
Silicon Dioxide (SiO2)
Blue Chalcedony
Chalcedony (SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
Amazonite
Microcline (KAlSi3O8)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Grey Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
Amazonite
Microcline (KAlSi3O8) with Trace Elements
Green Quartz (Prasiolite variant or Aventurine)
Silicon Dioxide (SiO2)
Sodalite
Na8(Al6Si6O24)Cl2
Amethyst (Quartz)
Amethyst (Silicon Dioxide with Iron impurities, SiO2)
Septarian Nodule (Septarian Dragon Stone)
Septarian Concretion (CaCO3 + Al2Si2O5(OH)4)
Moonstone
Orthoclase and Albite (KAlSi3O8 / NaAlSi3O8)
Blue Chalcedony
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Amazonite
K(AlSi3O8)
Dendritic Opal
Opalized Chalcedony with Manganese Inclusions (SiO2 · nH2O)
Emerald
Beryl (Be3Al2(SiO3)6) colored by Chromium and/or Vanadium
Amethyst
Silicon Dioxide with iron impurities (SiO2)
Peach Moonstone
Orthoclase (KAlSi3O8)
Amethyst
Silicon Dioxide (SiO2) with iron impurities