Rough Diamond
Native Carbon (C)
Category
Browse mineral (man enhanced) specimens identified by the Rock Identifier community.
Rough Diamond
Native Carbon (C)
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Olivine
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
Clear Quartz
Crystalline Silicon Dioxide (SiO2)
Amethyst (Geode)
Silicon Dioxide (SiO2) with iron impurities
Rose Quartz Druzy
Silicon Dioxide (SiO2)
Moss Agate
Chalcedony (Silicon Dioxide) with dendritic inclusions (SiO2)
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Moss Agate
Chalcedony (Silicon Dioxide / SiO2)
Moss Agate
Chalcedony (Silicon Dioxide) with dendritic inclusions (SiO2)
Peridot
Olivine ((Mg, Fe)2SiO4)
Pallasite Meteorite (Sliced and Polished)
Pallasite (Iron-Nickel Matrix with Olivine crystals)
Pink Pearl
Calcium Carbonate (Aragonite/Calcite) with Conchiolin (CaCO3)
Diamond
Carbon (C)
Diamond (Colorless/White)
Carbon (C)
Green Moss Agate
Agate (Silicon Dioxide - SiO2 with inclusions of Manganese/Iron oxides)
Rough Diamond
Diamond (pure carbon / C)
Peridot
Olivine (Mg, Fe)2SiO4
Fluorite (tumbled pebble)
Calcium Fluoride (CaF2)
Sandstone
Arenite (composed primarily of Quartz, SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (likely Quartz Sandstone)
Arenite (SiO2 based)
Sandstone (with minor quartz and possible clay components)
Clastic Sedimentary Rock (SiO2 dominated)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily Quartz, SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Bauxite
Bauxite (Mixture including Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))
Sandstone (with biological crust)
Arenite (SiO2 based)
Sandstone (Ferruginous)
Arenite (Fe-rich)
Citrine Quartz
Silicon Dioxide (SiO2)
Ruby in Zoisite (Anyolite)
Anyolite (Combination of Corundum and Zoisite)
Sandstone
Arenite (SiO2 primarily)
Sandstone (likely Red/Brown Sandstone)
Arenite (SiO2 based)
Sandstone (Ferruginous)
Arenite with Iron Oxide matrix
Sandstone (Fossiliferous)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (likely Graywacke or Arkosic varieties)
Arenite (composed primarily of SiO2)
Pearl
Aragonite / Calcium Carbonate (CaCO3)
Paraiba Tourmaline
Elbaite Tourmaline (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) - Copper-bearing
Rough Amethyst Quartz
Silicon Dioxide with Iron impurities (SiO2)
Pink Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
Amethyst
SiO2 (Silicon Dioxide) with Iron (Fe3+) impurities