Smoky Quartz Cluster
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Category
Not A Rock (Man Made Origin)
Browse not a rock (man made origin) specimens identified by the Rock Identifier community.
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Desert Rose (Baryte or Gypsum Rose)
Baryte (BaSO4) or Gypsum (CaSO4·2H2O)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Chert (varietal Chalcedony or Flint)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Diamond (in a jewelry setting)
Diamond (Carbon, C)
mineral
Diorite (River Pebble)
Intermediate plutonic igneous rock
igneous
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
mineral
Limestone (specifically Marl or Chalk)
Calcium Carbonate (CaCO3)
sedimentary
Banded Jasper with Hematite or Quartz
Silicon Dioxide (SiO2) with impurities
sedimentary
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Yooperlite (Syenite clast containing fluorescent Sodalite)
Sodalite-bearing Syenite
igneous
Sandstone
Arenite (composed primarily of Quartz: SiO2)
sedimentary
Bituminous Coal (with Anthracite or Vitrinite inclusion)
Organic-rich Sedimentary Rock (Carboniferous classification)
sedimentary
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Note regarding baguette production (not a rock)
Digital text image - Somali language
not a rock
N/A - Image does not contain a rock or mineral
Anthropogenic textile material
Non-geological
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Mineral
Lapis Lazuli
Lazurite-dominant rock, (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2
metamorphic
Lapis Lazuli
Lapis Lazuli (Mineral composition: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Calcite, and Pyrite)
metamorphic
Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Man-made rock-like material
Malaysian 50 Sen Coin
Coinage (specific alloy unknown without metallurgical analysis, but typically brass or bronze for this denomination and era)
Man-made object (coin)
Slag
Ferrous Slag (Siliceous industrial waste)
Anthropogenic (Man-made industrial byproduct)
Sandstone (likely Fossilized Wood or Concrete Simulacrum)
Arenite / Silicified Wood / Anthropogenic Concrete
sedimentary
Corundum
Corundum (Aluminium oxide, Al2O3)
mineral
Larimar and Fossil Coral
Pectolite (NaCa2Si3O8(OH)) and Hexagonaria/Petoskey Stone
mineral and sedimentary
Turquoise
Hydrated phosphate of copper and aluminum; CuAl6(PO4)4(OH)8·4H2O
mineral
Ferruginous Sandstone (Ironstone)
Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)
sedimentary
Jasper with Chert
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Raw Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Emerald (Faceted Gemstone)
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Diamond (Green tinted)
Carbon (C) with trace impurities or lattice defects
mineral
Granite
Phaneritic Plutonic Felsic Rock
igneous
Sandstone (likely Fossiliferous)
Arenite / Fossiliferous Sandstone (SiO2 composition)
sedimentary
Alexandrite
Chrysoberyl (BeAl2O4 with Chromium impurities)
mineral
Ruby
Corundum (Al2O3 with Chromium impurities)
mineral
Pink Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
mineral
Diamond in Kimberlite
Diamond (C in Kimberlite)
igneous
Diamond (in jewelry setting)
Diamond (C - Carbon)
mineral
Orbicular Jasper (Eye Jasper / Kambaba-like pattern)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Fluorite (Green Fluorite)
Calcium Fluoride (CaF2)
mineral