Amethyst cluster
Quartz, SiO₂, violet variety (amethyst)
Category
Browse mineral (specifically a variety of quartz) specimens identified by the Rock Identifier community.
Amethyst cluster
Quartz, SiO₂, violet variety (amethyst)
Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Jasper
Chalcedony (Microcrystalline Quartz) - SiO2
Jasper Conglomerate
Polymictic Conglomerate with Jasper and Quartz
Quartz (Water-worn Pebbles)
Silicon Dioxide (SiO2)
Quartz (Common or Milky Quartz)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2) / Rock Crystal
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Gray Agate
Cryptocrystalline Quartz (SiO2)
Jasper
Silicon dioxide (SiO2)
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Plagioclase)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
Quartz (Rose Quartz or Jasper variety)
Silicon Dioxide (SiO2)
Quartz (Milky or Smoky Quartz variety)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Red jasper (likely iron-rich chert)
Microcrystalline quartz (SiO₂) colored by hematite/goethite
Chalcedony (Agate / Jasper Specimen)
Silicon Dioxide (SiO2)
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
Chert (and associated Flint)
Silicon Dioxide (SiO2)
Quartz (Milky or Cloudy variety)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Polished carnelian/chalcedony agate
Microcrystalline quartz (SiO₂), chiefly chalcedony with iron-oxide coloring
Chert (Flint)
Microcrystalline Quartz (SiO2)
Pink Granite
Granite (Alkali-feldspar granite)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Pink/Rose or Hematinoid Quartz)
Silicon Dioxide (SiO2)
Quartz (Raw Specimen)
Silicon Dioxide (SiO2)
Gneiss (specifically Pink Gneiss)
Gneiss (high-grade regional metamorphic rock)
Smoky Quartz
Silicon Dioxide (SiO2)
Jasper
Silicon Dioxide (Quartz variety, SiO2)
Quartz
Silicon Dioxide (SiO2)
Ocean Jasper
Spherulitic Chalcedony (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)