Yellow Chalcedony (Agate)
Silicon Dioxide (SiO2)
Category
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
Yellow Chalcedony (Agate)
Silicon Dioxide (SiO2)
Citrine Quartz
Macrocrystalline Quartz (SiO2)
Banded Chert (Flint)
Cryptocrystalline Quartz (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Rose Quartz
SiO2 (Silicon Dioxide)
Agate (specifically Botswana or Lake Superior style chalcedony)
Silicon Dioxide (SiO2)
Chert
Chert (Microcrystalline Quartz, SiO2)
Red Jasper
Silicon Dioxide (SiO2) - variety Jasper
Black Onyx
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Brecciated Jasper
Silicon dioxide (SiO2) microcrystalline quartz breccia
Rose Quartz
Silicon dioxide with traces of titanium, iron, or manganese (SiO2)
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
Chert (Jasper)
Silicon Dioxide (SiO2)
Green Chert (Jasper)
Cryptocrystalline Quartz (SiO2)
Rose Quartz
Silicon Dioxide with traces of Titanium, Iron, or Manganese (SiO2)
Green Calcite (often commercially called Green Onyx)
Calcium Carbonate (CaCO3)
Onyx (beads)
SiO2 (Cryptocrystalline Quartz)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Honey Calcite
Calcium Carbonate (CaCO3)
Chert (specifically Gray Chert)
Chert (SiO2)
Flint (Chert Nodules)
SiO2 (Cryptocrystalline Quartz)
Quartz (Milky Quartz)
Quartz (SiO2 - Silicon Dioxide)
Chert (specifically River Stone / Jasper variety)
Microcrystalline Quartz (SiO2)
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Green Kyanite
Kyanite (Al2SiO5)
Amethyst (Chevron Amethyst)
Amethystine Quartz (SiO2)
Agate (Grey Agate Slice)
Microcrystalline Quartz (SiO2)
Quartz (Chalcedony)
Silicon Dioxide (SiO2)
Chert (Black Chert/Flint)
Cryptocrystalline Quartz (SiO2)
Chert (specifically a variety like Flint or River Jasper with Iron Oxidation)
Microcrystalline Quartz (SiO2)
Green Jasper
Jasper (variety of Microcrystalline Quartz, SiO2)
Red Tiger's Eye beads
Tiger's Eye (variety of Chalcedony, SiO2)
Chert (specifically Pink Chert or Jasperized Chert)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Chalcedony (Agate/Carnelian pebbles)
Cryptocrystalline Quartz (SiO2)
Gray Agate
Cryptocrystalline Quartz (SiO2)
Rose Quartz
SiO2 (Silicon Dioxide)
Pink Granite
Granite (Phaneritic Felsic Igneous Rock)
Chert (specifically Flint or Dark Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Amazonite
Amazonite (KAlSi3O8)
Carnelian
Carnelian (Silicon Dioxide - SiO2)