Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2 + Fe2O3)
mineral
Category
Man Made (Synthetic Rock)
Browse man made (synthetic rock) specimens identified by the Rock Identifier community.
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Chert / River Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Diamond (as set in a metal alloy ring)
Diamond (Pure Carbon, C)
mineral
Crushed Limestone
Calcium Carbonate (CaCO3)
Sedimentary
Diamond
Carbon (C)
mineral
Moissanite
Silicon Carbide (SiC)
mineral
Emerald
Beryl, Be₃Al₂(SiO₃)₆, colored green mainly by chromium and/or vanadium
gemstone
Banded Calcite (often sold as 'Mexican Onyx' or 'Green Onyx')
Calcite (Calcium Carbonate, CaCO3)
Sedimentary
Chert (Grey-Green Flint)
Microcrystalline silicon dioxide (SiO2)
sedimentary
Pink Marble
Recrystallized Limestone (Calcium Carbonate, CaCO3)
metamorphic
Cubic Zirconia
Zirconium Dioxide (ZrO2)
mineral
Blue chalcedony cabochon (probable)
Chalcedony, a cryptocrystalline variety of quartz; silicon dioxide, SiO₂
gemstone
Goldstone (blue-goldstone–style glass) beads
Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral
mineral
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
sedimentary
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Porcelain (Stoneware Ceramic)
Mullite / Silica-glass composite (Al6Si2O13)
metamorphic (man-made)
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
mineraloid (man-made)
Iron Slag
Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)
Anthropogenic (Man-made industrial byproduct)
Flint
Sedimentary cryptocrystalline quartz (SiO2)
sedimentary
Fossilized Shark Tooth
Carcharocles sp. or Striatolamia sp. (Phosphate/Carbonate mineralized Hydroxyapatite)
sedimentary
Larimar
Pectolite (NaCa2Si3O8(OH))
Mineral variant / Gemstone
Cubic Zirconia (Faceted)
Zirconium Dioxide (ZrO2)
mineral
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Sapphire (Blue)
Corundum (Al2O3)
mineral
Diorite
Phaneritic Intrusive Igneous Rock (composed of Plagioclase feldspar, Hornblende, and Biotite)
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite or Hematite-rich Ore
Magnetite (Fe3O4) or Hematite (Fe2O3)
mineral
Chert (Nodule/Pebble)
Chert (Silicon Dioxide, SiO2)
sedimentary
Orange Sapphire
Corundum (Al2O3)
gemstone
Diamond
Carbon (C)
gemstone
Diamond
Carbon (C)
gemstone
Diamond
Carbon (C)
mineral
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
mineral
Diamond (Colorless/White)
Carbon (C)
mineral
Strawberry Quartz (or Sunstone / Tumbled Quartz)
Silicon Dioxide (SiO2) with Hematite/Lepidocrocite inclusions
mineral
Rough White Zircon
Zircon (Zirconium Silicate, ZrSiO4)
mineral
Ruby
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
mineral
Diamond (in jewelry)
Cubic Carbon (C)
mineral
Chalk
Calcium Carbonate (CaCO3)
sedimentary
Chert (Nodular or Massive Variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Precious Coral (Red Coral)
Corallium rubrum (Calcium Carbonate, CaCO3)
mineral