Obsidian
Volcanic Glass (Silicon Dioxide with impurities)
Category
Browse man made glass mineral simulant specimens identified by the Rock Identifier community.
Obsidian
Volcanic Glass (Silicon Dioxide with impurities)
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
Amethyst Cluster
Silicon Dioxide (SiO2) with iron impurities
Sandstone
Sedimentary Clastic Rock
Sandstone
Sedimentary Rock (Quartz arenite)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 principal)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Quartzite with Quartz Vein
SiO2 (Metamorphosed Quartz Sandstone)
Quartzite
Quartzite (SiO2)
Coarse-grained Quartz with Feldspar inclusions
Crystalline Quartz (SiO2) with Orthoclase/Plagioclase Feldspar inclusions
Quartzite Pebble (with Iron Inclusions)
Quartzite (primarily SiO2 with Fe2O3/FeOOH impurities)
Granite
Phaneritic Plutonic Felsic Rock
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz with Mica/Chlorite inclusions
Silicon Dioxide (SiO2) with phyllosilicate inclusions
Clear Quartz
Silicon Dioxide (SiO2)
Sandstone (likely Conglomerate or Gritstone)
Arenite (SiO2 based)
Sandstone
Arenite (SiO2 principal)
Likely iron-rich chert or jasper
Microcrystalline quartz (SiO₂), variably stained by iron oxides/hydroxides
Chert (Flint)
Chert (Cryptocrystalline Silicon Dioxide, SiO2)
Rough Quartz (Alluvial Pebbles)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Polished orbicular jasper (likely ocean jasper)
Silicified microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and other mineral inclusions
Chert (Holey Stone)
Microcrystalline Quartz (SiO2)
Sea Glass
Amorphous silicon dioxide (glass)
Quartz
Silicon Dioxide (SiO2)
Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)
Jadeite (NaAlSi2O6), Corundum (Al2O3), Beryl (Be3Al2(Si6O18))
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz
Silicon Dioxide (SiO2)