Satin Spar (often marketed as Selenite)
Gypsum (CaSO4·2H2O)
Category
Browse carved stone specimens identified by the Rock Identifier community.
Satin Spar (often marketed as Selenite)
Gypsum (CaSO4·2H2O)
Obsidian
Volcanic glass (SiO2 + impurities)
Nephrite Jade (River Cobble)
Nephrite (Silicate mineral: Ca2(Mg, Fe)5Si8O22(OH)2)
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
Obsidian
Extrusive igneous volcanic glass (rich in SiO2)
Marble
Recrystallized Calcite / Dolomite (CaCO3)
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
Blue Anhydrite
Anhydrite (CaSO4)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Soapstone (Talc Schist)
Steatite
Amethyst (Carved Wolf Mini Figurine)
Silicon Dioxide (SiO2)
Brown Chalcedony (Agate/Jasper blend)
Silicon dioxide (SiO2)
Granite
Granite (a common type of Felsic Intrusive Igneous Rock)
Sandstone
Clastic sedimentary rock (Quartz arenite / Arkose)
Red Sandstone
Arenite (Ferruginous Sandstone)
Orange calcite
Calcite (CaCO₃)
Possible fossilized ammonite or concretion
Indeterminate fossil specimen; possibly an ammonoid mold/cast in iron-rich sedimentary rock
Hematite
Hematite (Fe2O3)
Satin Spar
Fibrous Gypsum (CaSO4·2H2O)
Anthracite Coal
High-rank coal (primarily Carbon, C)
Fossil Coral (Honeycomb Coral)
Favosites (extinct genus of Tabulate coral)
Likely serpentinized ultramafic rock (serpentinite)
Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, possibly with magnetite, chromite, and brucite
Carnelian
Quartz (chalcedony variety), SiO2
Red Jasper
Silicon Dioxide (SiO2), microcrystalline quartz with iron oxide inclusions
Tiger's Eye
Quartz (SiO2) with fibrous inclusions of Altered Crocidolite
Carnelian Agate
Carnelian (Silicon Dioxide - SiO2 with Iron Oxide impurities)
Sodalite
Na8(Al6Si6O24)Cl2 (Sodalite)
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
Black Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide) with impurities
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Red Jasper
Jasper (variety of Chert/Chalcedony, formula SiO2)
Chevron Amethyst
Silicon dioxide, SiO2 (Quartz variety)
Obsidian (Black Obsidian)
Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)
Sandstone
Arenite (primarily SiO2)
Libyan Desert Glass
Impactite silica glass (SiO2)
Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
Fluorite (Green)
Calcium Fluoride (CaF2)
Baltic Amber
Succinite (Fossilized Resin)
Jasper Pebble
Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron Oxide Impurities
Black Onyx
Chalcedony (SiO2)
Hematite
Iron(III) oxide (Fe2O3)