Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
Category
Browse mineral_rock specimens identified by the Rock Identifier community.
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
Greenschist
Greenschist
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Azurite
Azurite (Cu3(CO3)2(OH)2)
Chert (variations include Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
Chrysocolla in Matrix
Hydrated copper phyllosilicate mineral (Cu,Al)2H2Si2O5(OH)4·nH2O
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Diamond
Diamond (C)
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Basalt
Basalt (Aphanitic Mafic Volcanic Rock)
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Kambaba Jasper
Stromatolite / Fossilized Algae (Rhyolitic structure)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium or Manganese
Agate (Crazy Lace or Eye Agate)
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
Basalt with Quartz/Calcite matrix
Basalt (SiO2 with Ca/Mg/Fe silicates) on a Mineral Matrix
Sandstone
Arenite (primarily SiO2)
Diamond
Diamond (Pure Carbon, C)
Serpentinite
Serpentinite (complex silicate minerals including Lizardite, Antigorite, and Chrysotile)
Agate (Lace Agate Geode Slice)
Silicon Dioxide (SiO2)
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Carnelian Agate
Red Chalcedony (SiO2 with Iron Oxide impurities)
Diamond (or Cubic Zirconia)
Carbon (C) / Cubic Zirconium Dioxide (ZrO2)
Spessartine Garnet
Manganese aluminum silicate (Mn2+3Al2(SiO4)3)
Black Onyx
Cryptocrystalline Chalcedony (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Blue Calcite (commonly sold as Caribbean Calcite)
Calcium Carbonate (CaCO3)
Quartz Pebble
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Amethyst (Chevron Amethyst)
Silicon Dioxide (SiO2) with iron impurities
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Malachite
Malachite (Cu2CO3(OH)2)
Quartz
Silicon Dioxide (SiO2)
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
Rose Quartz
Silicon Dioxide (SiO2)
Bismuth
Bismuth (element Bi) with oxidized thin-film interference layer
Blue Lace Agate (Geode/Druzy variant)
Chalcedony (SiO2) with Quartz druzy