Agate
SiO2
Category
Browse mineral, specifically a variety of quartz specimens identified by the Rock Identifier community.
Agate
SiO2
Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)
Quartz (SiO₂)
Smoky Quartz and Citrine
Silicon Dioxide (SiO2)
Agate (specifically Botswana or Lake Superior style chalcedony)
Silicon Dioxide (SiO2)
Quartz (specifically Clear or Rose Quartz)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon dioxide / Quartz (SiO2)
Graphic Granite
Pegmatite (Quartz and Alkali Feldspar intergrowth)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Herkimer Diamond
Quartz (Silicon Dioxide, SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Citrine
Citrine (Silicon Dioxide, SiO2)
Pink Granite
Phaneritic Plutonic Felsic Igneous Rock (Granite)
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)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Chert (specifically Pink/Tan Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Tourmalinated Quartz
SiO2 with NaFe3+3Al6(BO3)3Si6O18(OH)4 inclusions
Selenite
Gypsum (CaSO4·2H2O), specifically the crystalline variety Selenite
Jasper (Petrified Wood variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Flint
SiO2 (Cryptocrystalline Quartz)
Quartz Geode
Silicon Dioxide (SiO2)
Herkimer Diamond
Quartz (Silicon Dioxide, SiO2)
Quartz Geode
Crystalline Silicon Dioxide (SiO2) within a geode structure
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Sandstone
Arenite (specifically sublithic or quartz arenite)
Yellow Quartz (Citrine or Iron-Stained Quartz)
Silicon Dioxide (SiO2)
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
Travertine (Tufa)
Calcium Carbonate (CaCO3)
Yellow Quartz (Chalcedony/Agate)
Silicon Dioxide (SiO2)