Granite
Granite (Felsic Plutonic Rock)
Category
Browse mineral (specifically, a variety of the mineral species pyrope almandine garnet) specimens identified by the Rock Identifier community.
Granite
Granite (Felsic Plutonic Rock)
Agate
Silicon Dioxide (SiO2) - variety Chalcedony
Caribbean Calcite
Calcium Carbonate with Aragonite (CaCO3)
Yellow Agate
Silicon Dioxide (SiO2)
Quartz (Rock Crystal)
Quartz (SiO₂ - Silicon Dioxide)
Milky Quartz (Micro-specimen)
Silicon Dioxide (SiO2)
Kunzite (variety of Spodumene)
Lithium Aluminum Silicate (LiAlSi2O6)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Chert / Flint
Chert (Silicon Dioxide, SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with high iron inclusion
Jadeite and Assorted Corundum (Ruby/Sapphire) / Beryl (Emerald)
Jadeite (NaAlSi2O6), Ruby/Sapphire (Al2O3), Emerald (Be3Al2(SiO3)6)
Chalcedony in Matrix
Silicon Dioxide (SiO2)
Banded Flint (Chert)
Silicon Dioxide (SiO2)
Quartz
Quartz (Silicon Dioxide, SiO2)
Milk Quartz (Tumbled Pebble)
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Ocean Jasper
Spherulitic Chalcedony (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Olivine (often within Peridotite)
Magnesium iron silicate, (Mg,Fe)2SiO4
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Beryl (Variety: Aquamarine)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
Onyx
Chalcedony (SiO2) with parallel banding
Blue Chalcedony
Silicon Dioxide (SiO2)
Red Jasper
Quartz (Silicon Dioxide) with Hematite inclusions, SiO2
Grey Quartz (likely Smoky Quartz or Milky Quartz)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Blue Calcite
Calcium Carbonate (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Yellow Chalcedony
Silicon Dioxide (SiO2)
Banded Onyx (Mexican Onyx / Travertine)
Calcite (CaCO3) - Banded Travertine
Amethyst (Pale/Light Variety)
Quartz (Silicon Dioxide) with Iron impurities - SiO2
Chrysoprase
Chalcedony (Silicon Dioxide, SiO2), flavored by Nickel