Chert (varieties include Flint and Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Category
Mineral (Man Made Glass)
Browse mineral (man made glass) specimens identified by the Rock Identifier community.
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Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Tiger Shark Fossil Tooth
Galeocerdo cuvier (fossilized)
sedimentary
Polished stone sphere, possibly agate or jasper
Likely microcrystalline quartz (SiO₂); exact variety cannot be confirmed from the image
mineral
Basalt
Basalt
Igneous
Tumbled chert or jasper pebble
Microcrystalline quartz (SiO₂), likely chert/jasper
sedimentary
Green Quartzite
Metamorphic Quartz Sandstone (SiO2)
metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Chert Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint)
Chert (SiO2)
sedimentary
Likely gold-colored metal ring with a possible gemstone
Uncertain; possibly gold alloy (Au) with a small quartz or glass-like setting
mineral
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Red-and-brown agate bead bracelet
Agate, a microcrystalline variety of quartz (SiO₂), likely colored chalcedony/carnelian
mineral
Chert
Chert (SiO2)
sedimentary
Chert Pebble
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Basalt
Basalt
igneous
Diamond in Kimberlite
Diamond (C in Kimberlite)
igneous
Faceted Glass (Costume Jewelry)
Amorphous Silicon Dioxide with colorants (Glass)
Synthetic/Man-made Material
Sandstone
Arenite (with iron oxide cement)
sedimentary
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
metamorphic
Carved quartz (likely rose quartz and green aventurine/quartz)
Quartz, silicon dioxide (SiO₂); green material may be aventurine quartz or serpentine
gemstone
Quartzite
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartzite
Metamorphic Quartzite (primarily SiO2)
metamorphic
Clear quartz crystal pendant
Quartz (silicon dioxide, SiO₂)
mineral
Polished stromatolite (likely fossilized microbial mat)
Fossil stromatolite; chiefly microcrystalline quartz (SiO₂), commonly replacing carbonate
fossil
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Flint
Silicon dioxide (Microcrystalline Quartz / Chert)
sedimentary
Quartzite
Quartzite (Metamorphosed Sandstone)
metamorphic
Chert
Microcrystalline quartz (SiO2)
sedimentary
Tumbled brown chalcedony or agate
Microcrystalline quartz (SiO₂), likely chalcedony; possibly iron-stained jasper or agate
gemstone
Artificial Rock Face (Faux Rock)
Glass Fiber Reinforced Concrete (GFRC)
man-made/construction material
Red gemstone ring, likely garnet or synthetic ruby
Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish
gemstone
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Diamond (or Diamond Simulant)
Carbon (C)
mineral
Diamond
Diamond (pure Carbon, C)
mineral
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Diamond
Carbon (C)
mineral
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary