Diamond
Native Carbon (C)
mineral
Category
Mineral (Synthetic Paper And Ink Polymorph)
Browse mineral (synthetic paper and ink polymorph) specimens identified by the Rock Identifier community.
Learn about Mineral (Synthetic Paper And Ink Polymorph) in the encyclopedia
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Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Snowflake Obsidian
Volcanic Glass (SiO2 with Cristobalite inclusions)
igneous
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Aragonite Star Cluster
Aragonite (CaCO3)
mineral
Likely aragonite crystal cluster
Aragonite, CaCO₃
mineral
Aragonite crystal cluster
Aragonite, orthorhombic CaCO₃
mineral
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Sandstone
Arenite
sedimentary
Blue Aragonite
Aragonite (Calcium Carbonate, CaCO3)
mineral
Marine gastropod shell
Calcareous mollusk shell, primarily aragonite (CaCO₃), likely a whelk or conch
fossil
Amber
Fossilized Tree Resin (C10H16O)
gemstone
Small colored gemstone or glass cabochons (uncertain)
Not identifiable from the image; the pieces may be colored glass or synthetic stones rather than natural minerals.
gemstone
Snowflake Obsidian
Volcanic Glass with Spherulite Inclusions (70–75% SiO2)
igneous
Opalite (Man-made Glass)
Synthetic Opalised Glass
mineral
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Mica (Muscovite)
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Snowflake Obsidian
Spherulitic Obsidian (primarily SiO2)
igneous
Aragonite Star Cluster
Aragonite (CaCO3)
mineral
Blue aragonite (probable)
Aragonite, CaCO₃; blue color likely from copper-bearing impurities
mineral
Blue Aragonite (polished)
Aragonite (CaCO3)
mineral
Aragonite (Star Cluster or Twinned variety)
Aragonite (Calcium Carbonate, CaCO3)
mineral
Cubic Zirconia
Zirconium dioxide (ZrO2)
mineral
Blue Agate (Tumbled and Dyed)
Silicon Dioxide (SiO2) with likely organic dyes
mineral
Graphitic schist
Graphite-rich pelitic schist; primarily quartz, mica, and graphite
metamorphic
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Sandstone
Arenite (primarily Quartz chemical formula SiO2)
sedimentary
Aragonite
Aragonite (CaCO3)
mineral
Opalite
Man-made glass (traditionally simulated Opal)
mineral
Biotite (Black Mica)
Biotite (K(Mg,Fe++)3AlSi3O10(OH,F)2)
mineral
White calcite fragment (likely limestone or marble)
Calcite, calcium carbonate (CaCO₃); exact host rock is uncertain from the image
mineral
Blue Kyanite
Kyanite (Al2SiO5)
metamorphic
Sillimanite
Al2O3(SiO2)
mineral
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Graphite
Carbon (C)
mineral
Blue Aragonite
Aragonite (Calcium Carbonate, CaCO3)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Blue kyanite
Kyanite, Al₂SiO₅
mineral
Kyanite
Kyanite (Al2SiO5)
mineral
Kyanite (in Schist Matrix)
Kyanite (Al2SiO5)
metamorphic
Sandstone (with potential fossil inclusions)
Clastic sedimentary rock (primarily SiO2)
sedimentary