Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Category
Man Made Material (Jewelry, Metal Alloy)
Browse man made material (jewelry, metal alloy) specimens identified by the Rock Identifier community.
Learn about Man Made Material (Jewelry, Metal Alloy) in the encyclopedia
View all →
Pyrite
Iron Sulfide (FeS2)
mineral
Mahogany Obsidian
Obsidian (Volcanic Glass with Hematite/Magnetite inclusions), SiO2
igneous
Chert
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Olivine in Basalt (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) / Scoriaceous Basalt (Host Rock)
igneous
Banded Calcite (often sold as 'Green Onyx')
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite - Lithium-rich Mica)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Black Flint
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Mammoth Tooth
Mammuthus tooth fossil
fossil
Bivalve Fossil (Clam)
Class Bivalvia (Mollusca)
fossil
Chondrite Meteorite
Stony Meteorite (Chondrite)
meteorite
Iridescent schist or phyllite
Micaceous quartz-rich schist/phyllite, likely containing muscovite or chlorite
metamorphic
Rose Quartz
Silicon dioxide (SiO2)
mineral
Chert (Jasper/Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Obsidian Arrowhead
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
igneous
Tektite (Indochinite)
Tektite (High-silica natural glass)
mineralogical glass/meteorite impactite
Nephrite Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Chert (Flint)
Chert (Microcrystalline Silicon Dioxide, SiO2)
sedimentary
Chert (variations include Flint/Jasper)
Chert (SiO2)
sedimentary
Chert (Flint nodule)
Silicon Dioxide (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Dalmation Stone (Dalmation Jasper)
Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)
igneous
Dyed Chalcedony (Agate)
Silicon Dioxide (SiO2) with artificial pigment
mineral
Diamond
Natural Diamond (Carbon, C)
gemstone
Petrified Wood
Silicified wood (primarily Quartz/Chalcedony, SiO2)
mineral
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Chert (often called Flint or Jasper)
Silicon Dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Yellow Jasper variant)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified wood (primarily Quartz, SiO2)
fossil
White Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
metamorphic
Fulgurite
Fulgurite (Lechatelierite / Vitreous Silica)
mineral
Tiger's Eye
SiO2 (Silicon Dioxide with Iron Oxide inclusions)
Mineral (Metamorphic pseudomorph)
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Chondrite Meteorite
Undifferentiated Chondrite
meteorite
Jasper
Silicon dioxide (SiO2)
sedimentary
Chert (varieties: Flint or Chalcedony)
Microcrystalline silica (SiO2)
sedimentary
Chert (varieties include Jasper or Flint)
Chert (Microcrystalline Silica, formula: SiO2)
sedimentary
Chondrite
Ordinary Chondrite (L or H group)
meteorite
Fossilized Shark Tooth
Carcharhinus sp. (likely Bull or Requiem shark family)
sedimentary