Dyed Agate Slice
Silicon Dioxide (SiO2) with artificial dyes
mineral
Category
Synthetic (Man Made Material Mimicking Natural Stone)
Browse synthetic (man made material mimicking natural stone) specimens identified by the Rock Identifier community.
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Diamond (Colorless/White)
Carbon (C)
mineral
Cubic Zirconia (CZ) Jewelry
Zirconium dioxide (ZrO2)
mineral (synthetic)
Sandstone
Clastic sedimentary rock (Quartz arenite/Arkose)
sedimentary
Pink Dyed Agate
Silicon Dioxide (SiO2) with synthetic pigment
mineral
Cubic Zirconia (Set in Jewelry)
Zirconium Dioxide (ZrO2)
gemstone
Sandstone (Water-worn Cobble)
Arenite (SiO2 with CaCO3 or Fe2O3 cement)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Granite
Intrusive Felsic Igneous Rock (primarily Quartz and Feldspar)
igneous
Sandstone (specifically Arkose or Quartz Arenite)
Arenite (primarily SiO2 with possible Feldspar)
sedimentary
Green Glass Cullet / Recycled Glass
Amorphous Silicon Dioxide (SiO2) with various metal oxides
Man-made Glass (Not a natural rock or mineral)
Blue chalcedony cabochon (probable)
Chalcedony, cryptocrystalline quartz; silicon dioxide (SiO₂)
gemstone
Blue slag glass or dyed glass-like industrial material
Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass
mineral
Diamond (or synthetic simulant)
Cubic C (Carbon)
mineral
Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
metamorphic
Ruby / Red Corundum
Al2O3 (Aluminum Oxide with Chromium trace)
gemstone
Diamond
Carbon (C)
mineral
Blue gemstone bead bracelet, likely lapis lazuli or dyed stone
Uncertain from image; possible lazurite-bearing lapis lazuli (Na₃Ca(Si₃Al₃)O₁₂S) or dyed quartz/glass imitation
gemstone
Staurolite (Cross Stone)
Staurolite (Fe2+2Al9Si4O23(OH))
metamorphic
Ruby
Corundum (Al2O3)
gemstone
Diamond (in a jewelry setting)
Carbon (C)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Ametrine
SiO2 (Silicon Dioxide with iron impurities)
gemstone
Probable amber fragment
Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)
gemstone
Blue Quartz / Glass Gemstone Pendant
SiO2 (Silicon Dioxide) or Synthetic Glass
gemstone
Diamond (in Jewelry Setting)
Carbon (C)
gemstone
Diamond Druzy (Crystalline Diamond)
Carbon (C)
mineral
Crushed Limestone
Calcium Carbonate (CaCO3)
Sedimentary
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
Natural or Cultured Pearl
Calcium Carbonate (Aragonite and Conchiolin), CaCO3
Mineral (Organic)
Blue Sapphire
Corundum (Al2O3) with traces of Iron and Titanium
mineral
Graphite
Graphite (Carbon, C)
mineral
Diamond
Carbon (C)
gemstone
Lapis lazuli and green-blue chalcedony jewelry
Lapis lazuli: lazurite-bearing metamorphic rock, chiefly lazurite (Na₃Ca(Al₃Si₃O₁₂)S) with calcite and pyrite; second stone: likely chrysoprase or green-blue chalcedony (microcrystalline quartz, SiO₂)
gemstone
Cubic Zirconia (Faceted Gemstone)
Zirconium dioxide (ZrO2)
gemstone
Ruby
Corundum (Al2O3)
mineral
Likely diamond accent
Diamond (crystalline carbon, C)
gemstone
Cubic Zirconia (as a jewelry specimen)
Zirconium dioxide (ZrO2)
mineral
Tektite
Impactite (Natural Silicate Glass)
meteorite
Cubic Zirconia (CZ)
Zirconium dioxide (ZrO2)
mineral
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Glass / Silicon Dioxide (Man-made)
SiO2 (Amorphous Silicon Dioxide)
Amorphous Solid