Sea Glass (Teal/Turquoise)
Amorphous Silica (SiO2) with trace metal oxides
Anthropogenic (Man-made material processed by nature)
Category
Mineral (Synthetic Paper And Ink Polymorph)
Browse mineral (synthetic paper and ink polymorph) specimens identified by the Rock Identifier community.
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Snowflake Obsidian (Tumbled)
Obsidian with Cristobalite inclusions
igneous
Sea Shell Fragment (Calcium Carbonate)
Aragonite / Calcite (CaCO3)
mineral
Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Opalite (Synthetic Moonstone/Sea Opal)
Silicon Dioxide (SiO2) glass with metallic inclusions
Synthetic/Man-made Glass
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Microcline Feldspar
KAlSi3O8
mineral
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Gypsum Wallboard (Drywall)
Hydrous calcium sulfate (CaSO4·2H2O)
sedimentary (processed mineral product)
Aragonite (Sputnik habit)
Aragonite (Calcium Carbonate, CaCO3)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Aragonite (Onyx Marble)
Calcium Carbonate (CaCO3), Orthorhombic crystal system
mineral
Aragonite
Aragonite (Calcium Carbonate - CaCO3)
mineral
Diamond (in a jewelry setting)
Carbon (C)
mineral
Snowflake Obsidian
Vitreous volcanic silicate (SiO2 with Cristobalite inclusions)
igneous
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Snowflake Obsidian
Obsidian with Spherulitic Cristobalite (SiO2)
igneous
Diamond
Native Carbon (C)
mineral
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
N/A (Non-Geological Object)
N/A
Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2)
metamorphic
K2 Jasper (K2 Granite)
Azurite in Granite (Biotite Granite with Azurite inclusions)
igneous
Aragonite Star Cluster
Aragonite (CaCO3)
mineral
Amber
Succinite
mineral
Diamond (as set in a gold ring)
Carbon (C)
mineral
K2 Jasper (K2 Granite)
Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)
igneous
Cubic Zirconia
Zirconium dioxide (ZrO2)
mineral
Aragonite
Aragonite (Carbonate mineral), CaCO3
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Snowflake Obsidian
Volcanic glass containing Spherulitic inclusions (SiO2 + impurities)
igneous
Snowflake Obsidian
Volcanic glass containing Cristobalite (SiO2)
igneous
Snowflake Obsidian
Volcanic Glass (spherulitic Obsidian) - SiO2 (with Cristobalite inclusions)
igneous
Aragonite Star Cluster
Aragonite (CaCO3)
mineral
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Blue Aragonite
Aragonite (Calcium Carbonate, CaCO3)
mineral
Aragonite (Star Cluster or Twinned variety)
Aragonite (Calcium Carbonate, CaCO3)
mineral
Ruby (in costume jewelry context)
Corundum (Al2O3) with Chromium impurities
mineral
Opalite
Synthetic glass / Opalized glass
gemstone
Sillimanite
Al2O3(SiO2)
mineral