Amethyst
Amethyst (SiO2 with iron impurities)
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Amethyst
Amethyst (SiO2 with iron impurities)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Amethyst
Silicon Dioxide with iron impurities (SiO2)
Amazonite
Potassium Feldspar (Microcline), K(AlSi3O8)
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Amethyst (as seen in jewelry)
Silicon Dioxide (SiO2) with iron impurities
Citrine
Silicon Dioxide (SiO2) with iron impurities
Amethyst Quartz
Silicon Dioxide (SiO2)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Sandstone
Arenite
Amethyst
Silicon Dioxide (SiO2)
Carnelian
SiO2 (Silicon Dioxide)
Green Quartz (Prasiolite/Adventurine)
Silicon Dioxide with inclusions (SiO2)
Amazonite
Microline Feldspar (KAlSi3O8)
Vesicular Basalt (Lava Rock)
Vesicular Basalt (comprising plagioclase feldspar and pyroxene group minerals)
Serpentine
Antigorite/Lizardite/Chrysotile complex: (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Eye Agate
Silicon Dioxide (SiO2) - Banded Chalcedony
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Banded Gneiss
Gneiss (Metamorphic Rock)
Limonite with Hematite
Hydrated iron(III) oxide-hydroxide with variable composition (FeO(OH)·nH2O)
Carnelian Agate
Silicon Dioxide (SiO2) with Iron Oxide impurities
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Raw Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Carnelian
Carnelian (a variety of Chalcedony), SiO2 (Silicon Dioxide)
Dalmation Stone
Peralkaline rhyolite (SiO2 with Arfvedsonite/Riebeckite)
Green Opal or Yellow Opal
Hydrated Silica (SiO2·nH2O)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Dendritic Agate
Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)
Granite Cobble
Granite (Felsic Plutonic Rock)
Pyrite
Iron Sulfide (FeS2)
Labradorite
Labradorite (Ca, Na)(Al, Si)4O8
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Banded Quartzite with Epidote and Iron Oxides
Metasedimentary Quartzite (SiO2) with inclusions
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
Yellow Quartzite (River Pebble)
Quartzite (primarily Silicon Dioxide, SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Fossiliferous Limestone
Biogenic Calcium Carbonate (CaCO3)
Fluorite
Calcium Fluoride (CaF2)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)