Quartz (specifically a water-worn river pebble)
Silicon Dioxide (SiO2)
Category
Browse mineral, specifically a variety of quartz specimens identified by the Rock Identifier community.
Quartz (specifically a water-worn river pebble)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Carnelian (Flame Polished)
Carnelian (SiO2 with Iron Oxide impurities)
Chert / Flint
Chert (Microcrystalline Quartz, SiO2)
Rose Quartz
Quartz (Silicon Dioxide, SiO2) with trace inclusions of dumortierite
Smoky Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Quartz (Silicon Dioxide - SiO2)
Citrine Quartz
Citrine (Silicon Dioxide - SiO2)
Rose Quartz
Rose Quartz (SiO₂)
N/A (This is a digital image of a bar graph)
Digital Data Visualization (Bar Chart)
Banded Calcite (often sold as Orange Onyx or Mexican Onyx)
Calcium Carbonate (CaCO3)
Red Jasper
Silicon dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Pearl
Calcium carbonate (CaCO3) + organic conchiolin (Biogenic Mineral)
Amethyst
Amethyst (SiO₂)
Agate (Carnelian-Blue Agate mix)
Silicon Dioxide (SiO2)
Aragonite Star Cluster
Aragonite (Calcium Carbonate - CaCO3)
Amethyst
Amethyst (Silicon Dioxide - SiO2 with impurities of iron)
Milky Quartz
Quartz (SiO2)
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Quartz (Milky or Cloudy variety)
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Amethyst (Chevron or Banded variety)
Silicon Dioxide (SiO2) with iron impurities
Rose Quartz
Crystalline Silicon Dioxide with trace Titanium/Manganese/Iron (SiO2)
Green Quartzite (Aventurine variety)
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Smoky Quartz
SiO2 (Silicon Dioxide)
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Amazonite
Microcline (KAlSi3O8) with Pb impurities
Quartz (Milky/Common variety)
Silicon Dioxide (SiO2)
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Chert (or Flint)
Chert (cryptocrystalline quartz), SiO2
Chalcedony (Banded/Mottled Variety)
Chalcedony (a cryptocrystalline variety of Quartz, SiO2)
Banded Agate (Lake Superior Agate type)
Agate (Cryptocrystalline Variety of Quartz, SiO2)
Yellow Chalcedony
Chalcedony (a cryptocrystalline variety of Quartz, SiO₂)
Green Banded Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
Agate Geode / Thunderegg
Chalcedony (cryptocrystalline variety of Quartz), SiO2