Diamond
Native Carbon (C)
mineral
Category
Industrial By Product
Browse industrial by product specimens identified by the Rock Identifier community.
Diamond (Faceted Gemstone)
Native Carbon (C)
mineral
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Anticrystalline / Synthetic Alloy
Goethite
Goethite (α-FeO(OH))
Mineral
Sulfur on Aragonite
Sulfur (S) and Aragonite (CaCO3)
Mineral
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
mineraloid (synthetic)
Red Quartz (Druzy)
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Quartzite (Milky)
Quartzite (SiO2)
metamorphic
Obsidian
Volcanic Glass (SiO2)
igneous
Diamond
C (Native Carbon)
mineral
Sandstone with Iron Concretion
Arenite with Limonite/Goethite Concretion
sedimentary
Cullet Glass (Slag)
Amorphous Silicon Dioxide (Man-made)
Mineraloid
Mica (Muscovite)
Muscovite, KAl2(AlSi3O10)(OH)2
Mineral
Synthetic Sapphire and Ion-X Glass
Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass
mineral
Iron Slag
Ferrous Slag (Industrial Byproduct)
mineraloid (anthropogenic byproduct)
Blue Slag Glass
Amorphous Silica (Industrial byproduct)
Antropogenic (Man-made glass byproduct)
Slag Glass (Cullet Glass)
Amorphous Silica (Industrial byproduct)
mineral
Cullet (Slag Glass)
Amorphous Silica (Industrial byproduct)
mineraloid
Bicolor Quartz (Milk Quartz with Slag or Dark Inclusions)
Silicon Dioxide (SiO2) with impurities
mineral
Quartz Sand Gravel
Silicon Dioxide (SiO2)
sedimentary
N/A - Image is non-geological
Acrylonitrile Butadiene Styrene (ABS) or Polypropylene (PP)
Synthetic material (Plastic/Polymer)
Synthetic Costume Accessory (Non-Geological)
Polyester and Acrylic Fiber (Anthropogenic polymer)
Synthetic / Man-made textile
River Pebble (Quartzite/Chert)
Quartzite with inclusions (SiO2)
metamorphic
Kyanite
Kyanite (Al2SiO5)
Mineral
Opalite
Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)
mineraloid
Diamond (or Lab-Grown Cubic Zirconia)
Carbon (C)
mineral
Synthetic Convention Badge (Plastic/PVC)
Polyvinyl Chloride (PVC) / Polycarbonate
mineraloid (synthetic)
Cupronickel Coin
Copper-Nickel Alloy (typically 75% Cu, 25% Ni)
anthropic metallic specimen
Red Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Ferrochrome Slag
Anthropogenic silicate/oxide glass (Complex silicate matrix with Cr-Fe-Si inclusions)
Industrial byproduct (often confused with igneous rocks or meteorites)
Faceted Diamond or Cubic Zirconia
Carbon (C) for Diamond; Zirconium dioxide (ZrO2) for CZ
mineral
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Ironstone (Limonitic Shale)
Ferruginous Siltstone / Goethite-rich Sedimentary Rock
sedimentary
Rough Diamond
Diamond (pure Carbon, C)
mineral
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
mineraloid (man-made)
Diamond (or Cubic Zirconia)
Carbon (C) / Cubic Zirconium Dioxide (ZrO2)
mineral
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial byproduct)
mineraloid
Cubic Zirconia
Zirconium Dioxide (ZrO2)
mineral
Note: Item is a Synthetic/Man-made Object
Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)
Non-geological
Sand Grain (Silica/Quartz Grain)
Silicon Dioxide (SiO2)
sedimentary
Gravel or Crushed Stone
Fragmented Aggregate Stone
sedimentary or igneous fragment