Diamond
Carbon (C)
gemstone
Category
Man Made
Browse man made specimens identified by the Rock Identifier community.
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Diamond
Carbon (C)
mineral
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
mineral
Diamond (Colorless/White)
Carbon (C)
mineral
Chalk
Calcium Carbonate (CaCO3)
sedimentary
Chalk
Micrite (primarily Calcium Carbonate, CaCO3)
sedimentary
Diamond (or Cubic Zirconia simulant)
Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ
mineral
Diamond
Carbon (C)
mineral
Moissanite
Silicon Carbide (SiC)
mineral
Diamond
Carbon (C)
gemstone
Aura Quartz / Rainbow Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Diamond
Carbon (C)
mineral
Corundum (Pink Sapphire / Ruby)
Al2O3 (Aluminum Oxide)
mineral
Diamond (in a jewelry setting)
Carbon (C)
mineral
Blue Chalcedony Cube
Silicon Dioxide (SiO2)
mineral
Fossil Shark Tooth
Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna
fossil
Corundum (Ruby variety)
Aluminium oxide (Al2O3)
mineral
Diamond (as set in a gold ring)
Carbon (C)
mineral
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Diamond
Native Carbon (C)
mineral
Corundum (Sapphire/Ruby in Matrix)
Corundum (Al2O3)
mineral
Diamond Druzy (Crystalline Diamond)
Carbon (C)
mineral
Diamond
Diamond (pure native carbon, C)
mineral
Black Obsidian
Obsidian (Volcanic Glass, SiO2 + impurities)
igneous
Synthetic Faux Fur Fursuit
Polyacrylonitrile / Polyester (Synthetic Textile)
not a rock (synthetic material/costume)
Green Aura Quartz
Silicon Dioxide (SiO2) bonded with metallic vapors (typically Gold, Chromium, or Titanium)
mineral
Diamond
Carbon (C)
gemstone
Rough Diamond
Native Carbon (C)
mineral
Diamond (in a cluster setting)
Crystallized Carbon (C)
mineral
Turquoise (likely stabilized or simulated Howlite)
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Note on Image Identification: Textile
N/A (Anthropogenic material)
not a rock
Grey Chalcedony
Silicon Dioxide (SiO2)
mineral
Diamond (as featured in jewelry)
Diamond (C - pure carbon)
mineral
Basalt
Basalt
Igneous
Tiger Shark Fossil Tooth
Galeocerdo cuvier (fossilized)
sedimentary
Diamond (Cut and Polished)
Diamond (pure Carbon, C)
gemstone
Diamond
Carbon (C)
mineral
Rough Sapphire (Corundum)
Corundum (Al2O3)
mineral
Pumice
Pumice (Vitreous volcanic rock)
igneous
Chert (specifically Flint Arrowhead)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Synthetic Convention Badge (Plastic/PVC)
Polyvinyl Chloride (PVC) / Polycarbonate
mineraloid (synthetic)