Quartz (specifically a water-worn river pebble)
Silicon Dioxide (SiO2)
Category
Browse mineral (metal) specimens identified by the Rock Identifier community.
Quartz (specifically a water-worn river pebble)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Diamond
Native Carbon (C)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz (among River Rock)
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz (Beach Pebble)
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Corundum (Sapphire/Ruby in Matrix)
Corundum (Al2O3)
Milky Quartz (Common Quartz)
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Silicon Dioxide with traces of Titanium, Iron, or Manganese (SiO2)
Diamond (appearing in jewelry)
Diamond (pure Carbon, C)
Diamond
Diamond (pure native carbon, C)
Rough Diamond
Diamond (C)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Pink Quartz (SiO2)
Yellow Quartz (Citrine-colored Quartz Pebble)
Silicon Dioxide (SiO2)
Granodiorite
Granodiorite (Quartz + Plagioclase + Alkali Feldspar + Biotite/Hornblende)
Basalt
Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)
Schist
Mica Schist (Group of medium-grade metamorphic rocks)
Ruby in Zoisite
Anyolite (Ruby in Zoisite)
Garnet Beads
Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)
Quartz Geode (Cracked)
Silicon Dioxide (SiO2)
Quartz Geode (with Calcite influence)
Silicon Dioxide (SiO2) with possible Calcium Carbonate (CaCO3)
Peacock Ore
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with iridescent tarnish
Coarse Sandstone
Arenite (SiO2 based)
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Banded Agate
Agate (Silicon Dioxide - SiO2)
Quartz Geode with Calcite
Silicon Dioxide (SiO2) and Calcium Carbonate (CaCO3)
Calcite
Calcium Carbonate (CaCO3)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Turquoise (Dyed Howlite or Magnesite imitation)
Hydrated phosphate of copper and aluminum / CuAl6(PO4)4(OH)8·4H2O
Celestite (Celestine) Geode
Strontium Sulfate (SrSO4)
Lapis Lazuli
A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).
Granite Pebble
Granite
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Moonstone
Orthoclase (KAlSi3O8), specifically the variety showing adularescence
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium), CuAl6(PO4)4(OH)8·4H2O