Water and Silt (Sedimentary Environment)
Suspended Sediment / H2O (dihydrogen monoxide)
sedimentary
Category
Industrial Byproduct (Often Mistaken For Obsidian Or Mineral)
Browse industrial byproduct (often mistaken for obsidian or mineral) specimens identified by the Rock Identifier community.
Learn about Industrial Byproduct (Often Mistaken For Obsidian Or Mineral) in the encyclopedia
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Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Rough Diamond
Diamond (pure carbon, C)
mineral
Rough Diamond
Diamond (Native Element Carbon, C)
mineral
Erythrite (or Lab-Grown Cobaltite/Cinnabar Analog)
Erythrite (Co3(AsO4)2·8H2O)
mineral
Labradorite
Labradorite (Plagioclase Feldspar Series) - (Ca, Na)(Al, Si)4O8
mineral
Quartz / River Cobble
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Pyrite (FeS2)
Mineral
Grey Agate (Tumbled)
Silicon Dioxide (SiO2)
mineral
Diamond (or Cubic Zirconia)
Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ
mineral
Diamond (in a jewelry setting)
Carbon (C)
mineral
Corundum (Sapphire variant)
Aluminum Oxide (Al2O3)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
Mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Ironstone with Limonite/Goethite coating
Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O)
sedimentary
Green Quartz (Prasiolite)
Crystalline Silicon Dioxide (SiO2)
mineral
Banded Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Aragonite Star Cluster
Aragonite (Sputnik habit) - CaesarCO3
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz Geode
Silicon dioxide (SiO2)
mineral
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
mineral
![Milky Quartz with Mica (Silicon Dioxide (SiO2) with Muscovite Mica [KAl2(AlSi3O10)(OH)2]) — mineral](https://media.rockidentification.com/6c87e860-d6cd-4578-9a1b-deeb0f1c14f4-thumbnail.jpg)
Milky Quartz with Mica
Silicon Dioxide (SiO2) with Muscovite Mica [KAl2(AlSi3O10)(OH)2]
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2 (Chromium-rich Muscovite)
mineral
![Rough Topaz (Aluminum silicate fluoride hydroxide [Al2SiO4(F, OH)2]) — mineral](https://media.rockidentification.com/648a35a3-0d85-48eb-b855-e1ed6440d008-thumbnail.jpg)
Rough Topaz
Aluminum silicate fluoride hydroxide [Al2SiO4(F, OH)2]
mineral
Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Schorl (Black Tourmaline)
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Cubic Zirconia (as used in jewelry setting)
Zirconium dioxide (ZrO2)
mineral
Iron Ore (Goethite and Hematite)
Iron Oxyhydroxide (α-FeO(OH)) and Iron(III) oxide (Fe2O3)
sedimentary
Quartz Geode with Calcite
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3)
mineral
Pyrite
Pyrite (FeS2)
Mineral
Smoky Quartz
Smoky Quartz (SiO2: Silicon Dioxide)
mineral
Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartzite with inclusions
Metamorphic Rock (Mainly SiO2)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
gemstone
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Obsidian (Arrowhead Lithic Tool)
Obsidian (Amorphous Volcanic Glass / SiO2 + inclusions)
igneous
Wishing Stone (Basalt or Mudstone with Quartz/Calcite Veins)
Hydrothermally veined Basalt (SiO2/CaCO3 intrusions)
igneous or sedimentary