Sandstone
Sedimentary Rock (Quartz arenite/Arkosic sandstone)
Category
Browse carved stone specimens identified by the Rock Identifier community.
Sandstone
Sedimentary Rock (Quartz arenite/Arkosic sandstone)
Jasper
Microcrystalline Quartz (SiO2)
Agate
Silicon Dioxide (Chalcedony), SiO2
Tiger's Eye
Quartz pseudomorph after crocidolite (SiO2)
Jasper (Banded / Brecciated Jasper Pebble)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Black Obsidian
Volcanic Glass (SiO2)
Red Jasper
Silicon Dioxide with Hematite (SiO2 + Fe2O3)
Hematite
Iron(III) oxide (Fe2O3)
Yellow Aventurine (Yellow Quartzite)
Silicon Dioxide (SiO2) with inclusions
Carnelian (Orange Chalcedony)
Silicon Dioxide (SiO2)
Rutile in Quartz (Rutilated Quartz)
SiO2 with TiO2 inclusions
Hematite
Hematite (Fe2O3)
Fluorite
Calcium Fluoride (CaF2)
Amber
Fossilized tree resin (Amorphous organic polymer)
Hematite
Iron(III) oxide (Fe2O3)
Argillite
Argillite (Fine-grained sedimentary rock composed mostly of clay-sized particles)
Satin Spar Gypsum (Selenite Wand)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
Raw Agate (Chalcedony Nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Green Turban Shell (Polished)
Turbo marmoratus (Aragonite/Calcite)
Red Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
Sandstone
Arenite
Coal (specifically Bituminous or Anthracite)
Organic sedimentary rock; primarily Carbon (C) with varying H, S, O, N
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (Quartz Arenite)
Sandstone (Chemical formula: primarily SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide with impurities)
Unakite
Altered Granite (Epidotized Granite)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
Carnelian Agate
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) inclusions
Turquoise carving
Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide inclusions
Satin Spar (often marketed as Selenite)
Fibrous Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Carnelian
Chalcedony (Silicon Dioxide, SiO2 with Iron Oxide impurities)
Sandstone (likely a river or beach pebble)
Sandstone (a clastic sedimentary rock)
Rose Quartz
Silicon Dioxide (SiO2)
Mahogany Obsidian
Volcanic glass (SiO2 with Hematite or Magnetite inclusions)
Rose Quartz
Silicon Dioxide (SiO2)
Slate
Slate (Low-grade foliated metamorphic rock)
Marble
Metamorphosed Limestone (calcite formulation CaCO3)