Sandstone
Arenite
Category
Browse synthetic (man made glass) specimens identified by the Rock Identifier community.
Sandstone
Arenite
Chert
Chert (Microcrystalline Quartz, SiO2)
Chert (varietal Flint)
Microcrystalline quartz (SiO2)
Ametrine
Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)
Diamond (Faceted)
Carbon (C)
Chert
Microcrystalline quartz (SiO2)
Quartz (Microcrystalline/Chert)
Silicon Dioxide (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Blue Chalcedony Cube
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 primarily)
Sandstone
Arenite
Chert Nodule
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Fossil Shark Tooth
Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna
Banded Chert / Chalcedony
Silicon Dioxide (SiO2)
Chert / Flint
Cryptocrystalline quartz (SiO2)
Corundum (Ruby variety)
Aluminium oxide (Al2O3)
Diamond (as set in a gold ring)
Carbon (C)
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
River Pebbles (Chert and Quartzite)
Sedimentary Clastic Rock (Silica-rich)
Chert
Microcrystalline Quartz (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Goldstone
Not a natural mineral or rock. It is an ornamental glass.
Smoky Quartz Cluster
Smoky Quartz (Silicon Dioxide - SiO2)
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
Sea Glass (Frosted Glass)
Amorphous Silica (SiO2) with various metal oxide impurities
Chalcanthite
Copper(II) sulfate pentahydrate (CuSO4·5H2O)
Chert (often called Flint or Agate nodule)
Cryptocrystalline Quartz (SiO2)
Sandstone (specifically Arkose or Quartz Arenite)
Arenite (primarily SiO2 with possible Feldspar)
Chert (Flint)
Chert (SiO2)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Likely diamond accent
Diamond (crystalline carbon, C)
Chert (often called Flint or Jasper)
Microcrystalline Quartz (SiO2)
Ruby (set in a gold pendant)
Ruby (Variety of Corundum, Al2O3)
Dalmatian Stone
Dalmatian Stone (Felsic Igneous Rock)
Flint (or Chert with cortex)
Silicon dioxide (SiO2)
White Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Chert (Quartz Variety)
Chert (Silicon Dioxide, SiO2)
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Diamond (or high-quality simulant like Cubic Zirconia)
Carbon (C) - Native Element
Diamond
Carbon (C)