Sandstone
Arenite (primarily SiO2)
sedimentary
Category
Man Made Object (Metalwork)
Browse man made object (metalwork) specimens identified by the Rock Identifier community.
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Bauxite
Bauxite (Al(OH)3, AlO(OH))
sedimentary
Coquina
Bioclastic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Coquina
Biogenic Limestone (mostly Calcium Carbonate, CaCO3)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (varietal Chalcedony or Flint)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Banded Chert (River Stone)
Silicon Dioxide (SiO2)
sedimentary
Fursuit (Synthetic Fur Specimen)
Canis anthropomorphus syntheticus
Anthropomorphic Textile Construct
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Serpentine, likely a variety of Chrysoprase (green chalcedony) or a similar translucent green mineral.
Serpentine Group Minerals (e.g., Antigorite, Lizardite) or Chalcedony (SiO2) with nickel impurities for Chrysoprase green.
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Obsidian
Obsidian (Volcanic Glass)
igneous
Amethyst (Digital/Conceptual Representation)
Amethyst (Silicon Dioxide with iron impurities, SiO2)
mineral
Red Moss Agate (Jasper)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Banded Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Amazonite
Potassium Feldspar (Microcline) - KAlSi3O8
mineral
Amazonite
Potassium Feldspar (KAlSi3O8)
mineral
Yellow Jade (Nephrite)
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Tiger's Eye (Multicolor/Variegated)
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxides)
mineral
Satin Spar (Selenite variant)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Amethyst
Silicon dioxide with iron impurities (SiO2)
mineral
Malachite
Malachite (Copper Carbonate Hydroxide, Cu2CO3(OH)2)
mineral
Banded Calcite (often sold as 'Green Onyx')
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)
mineral
Lapis Lazuli
Lapis lazuli (primary mineral: Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Turquoise
Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Obsidian (Black Obsidian)
Obsidian (Volcanic Glass)
igneous
Lapis Lazuli
Lapis Lazuli (A metamorphic rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Red Sandstone
Arenite (with Iron Oxide / Hematite staining)
sedimentary
Sandstone
Arenite (SiO2 based typically)
sedimentary
Diamond
Carbon (C)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
metamorphic
Rough Diamond
Diamond (pure Carbon, C)
mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Chert / Flint
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Fossilized Shell in Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Coquina
Coquina (Bioclastic Limestone)
sedimentary
Basalt
Basalt (comprising Plagioclase feldspar, Pyroxene, and Olivine)
igneous