Sapphire (likely blue synthetic sapphire or blue glass in a ring)
Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.
Category
Browse not a rock (synthetic material) specimens identified by the Rock Identifier community.
Sapphire (likely blue synthetic sapphire or blue glass in a ring)
Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.
Lapis Lazuli
Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Bauxite (Laterite Clay)
Bauxite (mixture of Hydrous Aluminum Oxides: Gibbsite Al(OH)3, Boehmite and Diaspore AlO(OH))
Lapis Lazuli (Raw Ore)
Na8[Al6Si6O24]n(S,Cl,SO4,OH)2 (Lazurite component)
Lapis Lazuli
Lapis Lazuli (A complex rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Note: No specimen visible
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Amazonite
KAlSi3O8 (Potassium Feldspar, variety of Microcline)
Lapis Lazuli
Na8[Al6Si6O24]S2 (Lazurite component), a rock composed primarily of Lazurite, Calcite, and Pyrite
Lapis Lazuli
Sodium aluminum silicate with sulfur (main component: Lazurite [(Na,Ca)8(AlSiO4)6(SO4,S,Cl)2])
Diamond
Diamond (pure carbon; C)
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(OH)₄(BO₃)₃Si₆O₁₈)
Lapis Lazuli
Na8(Al6Si6O24)S2 (Lazurite is the primary constituent mineral)
Lapis Lazuli (in Matrix)
Na8[Al6Si6O24]S2 (Lazurite as the primary component)
Polymer Clay (Mock Mineral)
Polyvinyl chloride (PVC) with plasticizers and pigment
N/A (Non-Geological Specimen)
Wood Beads (Palmwood/Ebony)
Various species for wood, but often refers to woods like Palmwood (e.g., Borassus flabellifer) or Ebony (Diospyros spp.) for their distinctive grain and hardness.
Amber
Succinite (Fossilized Tree Resin)
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite, Sodalite, Calcite, and Pyrite)
Goldstone
N/A (Synthetic Glass with Copper Inclusions)
Cubic Zirconia (CZ) Jewelry
Zirconium dioxide (ZrO2)
Lapis Lazuli
Lapis Lazuli (Mineral composition: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Calcite, and Pyrite)
Rutilated Quartz
SiO2 with TiO2 inclusions (Rutile)
N/A - Image does not contain a rock or mineral
Anthropogenic textile material
Quartz Vein in Siltstone
SiO2 (Quartz) on clastic sedimentary matrix
Sandstone
Arenite
Basaltic Tuff / Volcanic Breccia
Pyroclastic Breccia / Lithic Tuff
Note: Item is not a geological specimen
Homo sapiens (Dermal Appendage: Pilus)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Sandstone
Arenite (SiO2 based with mineral cement)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
Lapis Lazuli
Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Sandstone or Limestone
Sedimentary Rock
Sandstone (with potentially high Feldspar/Arkose content)
Clastic sedimentary rock (SiO2 dominated)
Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)
Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2, often with CaCO3 or Fe2O3 cement)
Goldstone (Red/Brown)
Aventurine Glass (SiO2 with Copper inclusions)
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
Sandstone (likely Greywacke or Lithic Sandstone)
Arenite / Wacke
Note regarding baguette production (not a rock)
Digital text image - Somali language