Sandstone (Ferruginous)
Arenite (Fe2O3 stained)
Category
Browse man made glass (not a natural rock or mineral) specimens identified by the Rock Identifier community.
Sandstone (Ferruginous)
Arenite (Fe2O3 stained)
Sandstone
Arenite (SiO2 primarily)
Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
Man-made Ceramic / Clay Figurine
Aluminosilicate Ceramic (Processed Clay)
Diamond (Cluster Ring)
Carbon (C)
Diamond
Cubic carbon (C)
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (primarily SiO2 with Feldspar)
Sandstone
Arenite (SiO2 based)
Dyed Quartz (imitating Emerald/Green Quartz)
Silicon Dioxide (SiO2) with artificial pigment
Sandstone (Calcareous Sandstone)
Calcareous Sandstone (primarily SiO2 with CaCO3 cement)
Pumice
Pumice (Vesicular volcanic glass)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Synthetic Faux Fur Fursuit
Polyacrylonitrile / Polyester (Synthetic Textile)
Sandstone (Quartz-rich)
Arenite (composed mainly of SiO2)
Diamond
Carbon (C)
Rough Diamond
Diamond (pure Carbon, C)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Citrine (Heat-treated Amethyst)
Citrine Quartz (SiO2)
Shale
Argillaceous Rock
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Smoky Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Green Quartz (Prasiolite)
Silicon Dioxide (SiO2) with trace impurities
Sandstone
Arenite
Sandstone
Arenite (SiO2 primarily)
Rough Diamond
Diamond (pure Carbon, C)
Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
Diamond in Kimberlite
Diamond in Kimberlite Matrix (Diamond: C, Kimberlite: complex Potassic Peridotite)
Sandstone (Ferruginous)
Sandstone (Clastic sedimentary rock, predominantly SiO2 with Fe2O3 cement)
Sandstone
Arenite (Siliclastic sedimentary rock)
Sandstone
Arenite (composed primarily of Quartz, SiO2)
Sandstone
Arenite (SiO2 with various cementing agents)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)
N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)
Sandstone
Arenite (SiO2 principal)
Green Aura Quartz (Titanium treated Kyanite or Quartz)
Silicon Dioxide (SiO2) or Aluminum Silicate (Al2SiO5) with Titanium/Metal Oxide coating
Crushed Limestone
Calcium Carbonate (CaCO3)
Diamond
Diamond (pure carbon C)
Smoky Quartz
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 primarily)
Pearl
Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)