Carnelian
Carnelian (Silicon Dioxide - SiO2)
Category
Browse not a natural rock specimens identified by the Rock Identifier community.
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Turquoise
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
Pumice
Pumice (Amorphous volcanic glass)
Agate (specifically Botswana or Banded Agate variety)
Chalcedony (Silicon Dioxide, SiO2)
Ironstone Concretion / Goethite Nodules
Ironstone (composed primarily of Goethite FeO(OH) and Limonite)
Limestone (Porous/Travertine variant)
Sedimentary Calcium Carbonate (CaCO3)
Sandstone
Arenite (SiO2 based clastic rock)
Granite
Granite (Felsic intrusive igneous rock)
Sandstone
Arenite (composed primarily of SiO2)
Peacock Ore (Bornite or Chalcopyrite treated with acid)
Bornite (Cu5FeS4) or Acid-washed Chalcopyrite (CuFeS2)
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Granite
Granite (compositional mixture of Quartz, Feldspar, and Mica)
Chakra Stone (Composite / Man-made Bonded Gemstones)
Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)
Jasper and Yellow Chert (Tumbled)
Microcrystalline Quartz (SiO2)
Dyed Agate Slice
Silicon Dioxide (SiO2) with artificial colorants
Clear Quartz
Silicon Dioxide (SiO2)
Granite
Intrusive Felsic Igneous Rock
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Banded Agate (specifically Eye Agate / Chalcedony)
Agate (Cryptocrystalline variety of Quartz, SiO2)
Red Sandstone
Arenite (primarily Quartz with Hematite cement)
Greywacke (River Siltstone)
Lithic Wacke (Sandstone subfamily)
Shale with Plant Fossils / Carbonaceous Shale
Laminated Mudrock (Siliciclastic)
Goldstone
N/A (Synthetic Glass with Copper Inclusions)
Milky and Citrine-type Quartz
Silicon Dioxide (SiO2)
Slate
Metamorphosed Shale (Fine-grained Foliated Metamorphic Rock)
Shale (with minor calcite veining)
Clastic sedimentary rock (primarily clay minerals and quartz)
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
Granite
Phaneritic intrusive igneous rock (consisting mainly of Quartz, Alkali Feldspar, and Plagioclase)
Shungite (Noble/Type II)
Non-crystalline carbon (Fullerene-bearing carbonaceous rock)
Amethyst (Tumbled)
Purple Quartz (SiO2 with iron impurities and irradiation)
Man-made Glass (Tumbled/Shaped)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Pebble (likely Quartzite or Chert)
Clastic Sediment, potentially composed of SiO₂ (Quartz)
Pink Granite
Granite (Phaneritic Felsic Igneous Rock)
Granite
Phaneritic plutonic felsic igneous rock
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Green Aventurine
Silicon Dioxide (Quartz variety) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Basalt River Cobble
Basalt (Aphanitic Mafic Volcanic Rock)