Sandstone
Clastic sedimentary rock (Quartz arenite / Arkose)
Category
Browse carved stone specimens identified by the Rock Identifier community.
Sandstone
Clastic sedimentary rock (Quartz arenite / Arkose)
Granite
Phaneritic plutonic igneous rock (felsic)
Sandstone (Quartzose Sandstone)
Clastic Terrigenous Sedimentary Rock (primarily SiO2)
Sandstone
Arenite (SiO2 primarily)
Sandstone (Quartzose)
Arenite (SiO2 based)
Chiastolite (Andalusite)
Al2SiO5
Granodiorite
Granodiorite (containing Plagioclase, Quartz, and K-feldspar)
Jet
Lignite coal variant (hydrocarbon polymer)
Chert with Desert Varnish
Cryptocrystalline Quartz (SiO2) with Manganese/Iron oxide coating
Labradorite (Polished Crystal Point)
Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8
Ruby in Zoisite
Anyolite (composite of Corundum and Zoisite)
Red Sandstone
Arenite (SiO2 based with Fe2O3)
Opalite Egg
Synthetic Glass (Simulated Opal)
Granite
Granite (Felsic Plutonic Rock)
Limestone
Calcium Carbonate (CaCO3)
Granite
Granite (Felsic Intrusive Igneous Rock)
Granite
Granite (Phaneritic Acid Igneous Rock)
Green Aventurine
Quartz variety (SiO2) with fuchsite inclusions
Opalite
Synthetic Glass (Amorphized Silicon Dioxide)
Blue Quartz (Blue Aventurine)
Silicon Dioxide (SiO2) with inclusions (typically crocidolite or dumortierite)
Granite
Granite (Felsic Plutonic Rock)
Unakite
Altered Granite (Epidotized Granite)
Granite
Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)
Dyed Howlite (often sold as Turquenite)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
Diorite (Pebble)
Diorite
Unakite
Altered Granite (Granitic Metamorphic Rock)
Unakite
Epidotized Granite
Sandstone (likely Quartzose)
Arenite (primarily SiO2)
Granite
Granite (Phaneritic igneous rock)
Granite
Granite (Felsic Plutonic Rock)
Pink Granite
Phaneritic Plutonic Felsic Rock (rich in Potassium Feldspar)
Granite
Phaneritic Plutonic Felsic Rock (SiO2 > 69%)
Septarian Nodule (Septaria)
Septarian Nodule (Calcium Carbonate/Aragonite/Calcite Concretion)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica)
Granite
Granite (Phaneritic Igneous Rock)
Diorite
Diorite
Black Obsidian
Volcanic Glass (SiO2 + impurities)
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) with Iron Oxide / Chlorite inclusions
Unakite
Altered Granite (Epidotized Granite)
Marble
Metamorphosed Limestone (CaCO3)
Chrysanthemum Stone
Chrysanthemum Stone (Calcite/Celestite/Strontianite in Limestone)