Red Quartz
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Category
Industrial By Product
Browse industrial by product specimens identified by the Rock Identifier community.
Almandine Garnet & Tumbled Citrine Quartz
Fe3Al2(SiO4)3 (Garnet) and SiO2 (Quartz)
mineral
Quartz with Mica inclusion
Silicon Dioxide (SiO2) with Muscovite/Biotite inclusions
igneous
Garnet Schist
Almandine Garnet Schist
metamorphic
Diamond in Kimberlite
Diamond (C in Kimberlite)
igneous
Diamond
Diamond (Pure Carbon, C)
mineral
Quartzite
Silica (SiO2)
metamorphic
Quartzite
Metamorphosed Quartz Sandstone
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Yellow Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Metamorphic Rock (Mainly SiO2)
metamorphic
Quartzite Pebble
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Red Vanadinite on Matrix
Vanadinite (Pb5(VO4)3Cl)
mineral
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Mineraloid / Industrial Byproduct
Diamond
Diamond (Pure Carbon - C)
mineral
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
metamorphic
Raw Diamond
Diamond (C)
mineral
Aquamarine
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Anthracite Coal
Anthracite (C)
sedimentary
Chert (Nodule)
Silicon dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Gypsum (Wallboard/Drywall)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
sedimentary
Chert (and Chalcedony/Agate mixture)
Microcrystalline Quartz (SiO2)
sedimentary
Vesicular Basalt (commonly mistaken for Slag)
Scoriaceous Basalt (composed primarily of Plagioclase Feldspar and Pyroxene)
igneous
Desert Rose (Baryte/Gypsum Rosette)
Baryte (BaSO4) or Gypsum (CaSO4·2H2O)
mineral
Agate
Cryptocrystalline Quartz (SiO2)
mineral
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Chert with Quartz Vein
Microcrystalline Quartz (SiO2) with Macrocrystalline Quartz
sedimentary
Blue Banded Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Sapphire
Corundum (Al2O3)
mineral
Almandine Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3)
metamorphic
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Cubic Zirconia
Zirconium Dioxide (ZrO2)
mineral
Agate
Chalcedony (SiO2)
mineral
Rough Blue Diamond
Carbon (C)
mineral
Corundum (Ruby Variety)
Corundum (Al2O3)
mineral
Anthracite Coal
Anthracite coal (Carbon)
metamorphic
Pink Garnet in Matrix
Grossular or Almandine Garnet (X3Y2(SiO4)3)
metamorphic
Diamond (Faceted Colorless)
Diamond (Pure Carbon, C)
mineral
Concretionary Sandstone
Clastic Sedimentary Rock (Sandstone with secondary mineral cementation)
sedimentary