Pyrite
Iron Sulfide (FeS2)
mineral
Category
Man Made Material (Jewelry, Metal Alloy)
Browse man made material (jewelry, metal alloy) specimens identified by the Rock Identifier community.
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Red Hematite
Iron(III) Oxide (Fe2O3)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Hematite (Tumbled)
Iron(III) oxide (Fe2O3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pink Dyed Agate
Silicon Dioxide (SiO2) - Variety Agate
mineral
Pink Diamond
Carbon (C)
mineral
Gold Ore
Auriferous Quartz and Sulfide Mineralization in Host Rock
igneous
Aventurine Quartz
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Tree Agate
Silica (SiO2) with Chlorite inclusions
mineral
Fossilized Coral (Petoskey Stone or Rugose Coral)
Antophyllum (Hexagonaria) or Scleractinia (CaCO3)
sedimentary
Anthracite
Anthracite (highest-grade coal)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Banded Iron Formation (BIF)
Magnetite-hematite-chert formation
sedimentary
Quartz (Variety: Citrine or Tumbled Chalcedony)
Silicon Dioxide (SiO2)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz / Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Obsidian
Volcanic Glass (predominantly SiO2)
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Amber / Copal
Organic resin, C10H16O
mineral
Milky Quartz
Silicon dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Clear Quartz
Silicon dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Cloudy Quartz
Silicon Dioxide (SiO2)
mineral
Black Pearl (Tahitian Pearl)
Aragonite / Calcite (CaCO3) with Conchiolin
mineral
Gold Ore in Quartz
Auriferous Quartz (Gold: Au; Quartz: SiO2)
Mineral
Fossil Coral
Cnidaria Anthozoa (Fossilized)
sedimentary
Pyrite Sun (Pyrite Dollar)
Iron Disulfide (FeS2)
mineral
Clear Quartz Cluster
Silicon Dioxide (SiO2)
mineral
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Moss Agate and Druzy Quartz Carving
Cryptocrystalline Silica (SiO2) with impurities
mineral
Fossilized Rugose Coral (Horn Coral)
Order Rugosa (extinct tetra-coral)
sedimentary