Sandstone
Arenite (primarily SiO2)
Category
Browse mineral (man made aura treatment) specimens identified by the Rock Identifier community.
Sandstone
Arenite (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Rhodochrosite
Manganese Carbonate (MnCO3)
Rhodochrosite
Manganese carbonate (MnCO3)
Sandstone
Arenite (SiO2 predominantly)
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
Granite
Granite (Mainly Quartz SiO2, K-Feldspar KAlSi3O8, and Plagioclase)
Limestone
Calcium Carbonate (CaCO3)
Quartzite (Iron-stained)
Quartzite (SiO2 with iron oxides)
Olivine
Magnesium Iron Silicate ((Mg, Fe)₂SiO₄)
Sandstone
Arenite (SiO2 principal)
Diamond (in Matrix)
Carbon (C)
Peridot in Basalt
Olivine ((Mg, Fe)2SiO4) in Basalt
Diamond
Carbon (C)
Rose Quartz
Silicon Dioxide (SiO2)
Pearl (incorporated into jewelry)
Aragonite and Calcite (CaCO3)
Diamond (or Cubic Zirconia)
Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ
Chalcedony (Botryoidal Agate)
Silicon Dioxide (SiO2)
Quartz (Variety: Citrine or Tumbled Chalcedony)
Silicon Dioxide (SiO2)
Gold Nugget
Native Gold (Au)
Olivine (Peridot)
Olivine (Mg, Fe)2SiO4
Eclogite
Eclogite (Omphacite + Pyrope)
Diamond in Kimberlite
Kimberlite Matrix with Carbon (Diamond)
Pearl
Organic Mineral (CaCO3 with conchiolin)
Pearl
Calcium Carbonate (CaCO3) in the form of Aragonite
Olivine (Peridot when gem-quality)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Clear Quartz Cluster
Silicon Dioxide (SiO2)
Diamond (in jewelry)
Carbon (C)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
Pearl (as a Biogenic Mineral)
Calcium Carbonate (mostly Aragonite) with Conchiolin; CaCO3
Rose Quartz
Silicon dioxide (SiO2)
Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Peridot
Olivine (Mg, Fe)2SiO4
Sandstone
Arenite (SiO2 predominantly)
Sandstone
Arenite
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz
Silicon Dioxide (SiO2)