Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Category
Browse organic (non geological) specimens identified by the Rock Identifier community.
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (White/Milky Quartz)
Silicon Dioxide (SiO2)
Pearl (Imitation or Cultured)
Calcium Carbonate (Aragonite/Calcite) - CaCO3
Chert Concretion
Silicon dioxide (SiO2)
Gray Chalcedony Gemstone
Chalcedony (SiO2)
Banded Agate (Onyx type)
Silicon dioxide (SiO2)
Black Obsidian
Volcanic Glass (SiO2 + impurities)
Gold Nugget
Native Gold (Au)
Quartz
Silicon Dioxide (SiO2)
Sandstone / Quartzite
Sedimentary quartz arenite
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Titanium Aura Quartz
Silicon Dioxide (SiO2) coated with Titanium and Niobium
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Geode (Quartz chalcedony variety)
SiO2 (Silicon Dioxide)
Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Gossan (with Limonite and Hematite)
Gossanous iron-oxide rock (Fe2O3 · nH2O)
Amber
Succinite (fossilized resin)
Clear Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Dyed Tumbled Quartz
Silicon Dioxide (SiO2) with artificial pigment
Clear Quartz
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Gold
Native Gold (Au)
Amygdaloidal Basalt (or Orbicular/Vesicular Basalt)
Basalt with quartz/agate amygdules
Sandstone
Clastic Sedimentary Rock
White Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)