Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Mineral With Artificial Coating
Browse mineral with artificial coating specimens identified by the Rock Identifier community.
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Ferruginous Quartz
Quartz (Silicon Dioxide) with Iron Inclusion, SiO2
mineral
Gold Nugget
Native Gold (Au)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Chalcedony Geode Fragment
Silicon Dioxide (SiO2)
mineral
Tiger's Eye (Mineral Collection)
Tiger's Eye (SiO2 with crocidolite inclusions)
mineral
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2 + Manganese/Iron oxides)
mineral
Rose Quartz (or Quartzite)
Silicon Dioxide (SiO2)
mineral
Green Moss Agate
Agate (Silicon Dioxide, SiO2) with inclusions of hornblende or chlorite
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Gold in Matrix
Native Gold (Au)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Caribbean Calcite
Aragonite and Calcite (CaCO3)
mineral
Agate (Chalcedony)
Cryptocrystalline Quartz (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Banded Agate (Chert/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Amber (Copal)
Succinite (fossilized tree resin)
mineral
Jasper with Quartz vein
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Septarian Nodule (Sphere)
Septarian (composed of Calcite, Aragonite, and Limestone/Claystone)
sedimentary
Shale
Sedimentary rock composed of clay minerals and quartz
sedimentary
Hematite Nodule
Hematite (Alpha Fe2O3)
mineral
Pyrite and Chalcopyrite in Fluorite Matrix
Calcium Fluoride (CaF2) with Iron Sulfide (FeS2)
mineral
Yellow Calcite (Polished Pebble)
Calcium Carbonate (CaCO3)
mineral
Chalcedony (Carnelian/Agate)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony (Quartz)
Silicon dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite Ore
Magnetite (Fe3O4)
mineral
Agate
Cryptocrystalline quartz, SiO2
mineral
Tumbled Carnelian
Carnelian (Var. of Chalcedony, SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Gypsum (Satin Spar variety)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Biotite on Quartz Matrix
Biotite - K(Mg,Fe)3(AlSi3O10)(OH,F)2 with Quartz (SiO2)
mineral
Bumblebee Jasper
Fibrous Calcite with Arsenic and Sulfur inclusions
mineral
Quartz (Milky/Clear)
Silicon Dioxide (SiO2)
mineral
Pyrite in Quartzite/Graphite Matrix
Iron Sulfide (FeS2)
Mineral