Fossilized Pycnodonte Oyster
Pycnodonte (Gryphaeostrea) species; Composition is Calcium Carbonate (Calcite/Aragonite)
sedimentary
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Processed Mineral Product) in the encyclopedia
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Chalcedony Geode
Chalcedony (SiO2) within a geode structure
Mineral Geode/Sedimentary or Volcanic related
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Synthetic material/Textile
Chalcedony (Banded/Mottled Variety)
Chalcedony (a cryptocrystalline variety of Quartz, SiO2)
Mineral
Red Jasper
Opaque Microcrystalline Quartz (SiO2 with Fe2O3)
sedimentary
Breciated Jasper
Brecciated Jasper (Silicon Dioxide, SiO2)
sedimentary
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides (Goethite)
sedimentary
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Faceted Clear Gemstone (Likely Quartz or Cubic Zirconia)
Silicon Dioxide (SiO2) or Zirconium Dioxide (ZrO2)
gemstone
Red Jasper
Silicon dioxide (SiO2) with iron inclusions
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron impurities
sedimentary
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Synthetic Sapphire and Ion-X Glass
Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Mineral
Green Adventurine
SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)
mineral
Petrified Wood
Silicified Wood (primarily SiO2 - Silicon Dioxide)
sedimentary
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral
Leopardskin Jasper
Jasper (a variety of microcrystalline Quartz)
Sedimentary
Eclogite (retrograded)
Eclogite (Omphacite-Garnet rock)
metamorphic
Tiger's Eye
Tiger's Eye (SiO2 with crocidolite inclusions)
mineral
Cubic Zirconia
Cubic Zirconia (Zirconium Dioxide, ZrO2)
mineral
Dyed Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Mica Schist
Schist (Crystalline metamorphic rock)
metamorphic
Lapis Lazuli
Lapis Lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)
metamorphic
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Snowflake Obsidian
Volcanic glass containing Spherulitic inclusions (SiO2 + impurities)
igneous
Rose Quartz
Silicon Dioxide (SiO2)
mineral
River Pebble (Likely Quartzite or Chert)
Silicon Dioxide (SiO2)
metamorphic or sedimentary
Gold Nugget
Native Gold (Au)
mineral
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Brecciated Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Dyed Agate
SiO2
mineral
Banded Agate
Chalcedony (cryptocrystalline variety of Quartz), SiO2
mineral
Pyrite
Pyrite (FeS2)
Mineral
Limestone (Cliff Formation)
Limestone (predominantly CaCO3 as calcite)
Sedimentary