Diamond
Diamond (pure carbon C)
mineral
Category
Mineral (Man Made Glass, Not Natural)
Browse mineral (man made glass, not natural) specimens identified by the Rock Identifier community.
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Pearl
Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)
mineral
Diamond (in jewelry setting)
Carbon (C)
mineral
Diamond (in jewelry setting)
Adamantine Carbon (C)
mineral
Slag
Ferrous Slag (Siliceous industrial waste)
Anthropogenic (Man-made industrial byproduct)
Titanium Coated Aura Quartz (Apple Aura Quartz)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition Coating
Mineral (Man-modified)
Diamond (in a jewelry setting)
Cubic Carbon (C)
mineral
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Mineral
Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)
N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)
Organic (if resin) or Synthetic (if glass); simulating Sedimentary or Metamorphic (for natural stones)
Slag (Industrial Byproduct)
Ferro-silicate glass (Slag)
Anthropogenic (Man-made industrial deposit)
Granite
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
igneous
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Anthropogenic (Man-made)
Sandstone (Ferruginous)
Arenite (SiO2 with Fe2O3 inclusions)
sedimentary
Natural Pearl (appearing in a jewelry setting)
Calcium Carbonate (mostly Aragonite), CaCO3 with Conchiolin
mineral
Pearl (Biogenic)
Nacre / Calcium Carbonate (CaCO3)
mineral
Chert (Field-collected Arrowhead-shaped Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Synthetic Marbled Aggregate (Footwear Component)
Ethylene-vinyl acetate (Croslite™)
not a rock (man-made polymer)
Terrazzo (with Marble and Granite fragments)
Cementitious or resinous composite containing Calcium Carbonate (CaCO3) and Silicates
sedimentary (man-made composite)
Coquina
Biogenic Limestone (Calcite/Aragonite base, CaCO3)
sedimentary
Banded Calcite or Travertine
Calcium Carbonate (CaCO3)
Sedimentary
Bismuth Crystal
Bismuth (Bi)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Granite
Granite (a phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)
igneous
Angel Aura Quartz (Treated Clear Quartz)
Silicon Dioxide (SiO2) coated with Vaporized Silver and Platinum
mineral
Pearl
Calcium Carbonate (CaCO3) with Conchiolin
mineral
Man-made Synthetic Material (Costume Faux Fur)
Synthetic Polymer (Polyester/Acrylic)
not a rock
Diamond
Carbon (C)
mineral
Coquina
Bioclastic Limestone (Coquina)
sedimentary
Chalk
Calcium Carbonate (CaCO3)
sedimentary
Man-made Synthetic Material (Not a rock or mineral)
Polyester (Polyethylene terephthalate) / Faux Fur
Synthetic / Textile
Slag
Anthropogenic Vitrification Product / Silicate Slag
Anthropogenic (Man-made industrial byproduct)
Crackled Quartz (Blue Dyed)
Silicon Dioxide (SiO2) with anthropogenic dye
mineral
Diamond
Diamond (pure Carbon, C)
mineral
Banded Sandstone
Arenite with Liesegang banding
sedimentary
Synthetic Faux Fur Fursuit
Polyacrylonitrile / Polyester (Synthetic Textile)
not a rock (synthetic material/costume)
Coquina
Coquina (Bioclastic Limestone)
sedimentary
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Sandstone
Clastic sedimentary rock (Quartz arenite/Arkose)
sedimentary
Man-made Ceramic / Clay Figurine
Aluminosilicate Ceramic (Processed Clay)
Synthetic (not a rock or mineral)
Sandstone
Arenite (composed primarily of Quartz: SiO2)
sedimentary