Chert (variant Flint/Jasper)
Microcrystalline Opaline Silica (SiO2)
sedimentary
Category
Synthetic Glass (Often Categorized As A Simulated Mineral)
Browse synthetic glass (often categorized as a simulated mineral) specimens identified by the Rock Identifier community.
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Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Vuggy Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Sandstone (with potential iron mineralization)
Arenite
sedimentary
Smoky Quartz (Rough)
Silicon Dioxide (SiO2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Blue Quartzite (Blue Aventurine)
Silicon Dioxide with Dumortierite/Crocidolite inclusions (SiO2)
metamorphic
Chert (Polished/Tumbled)
Silicon Dioxide (SiO2)
sedimentary
Jasper
Silicon Dioxide (SiO2) with impurities, microcrystalline quartz
sedimentary
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock - Arenite
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Beryl (Variety: Aquamarine)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
mineral
Chalcedony (Agate/Carnelian type)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Bull Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
mineral
Agate
SiO2 (Silicon dioxide, chalcedony variety)
Mineral
Chert / River Cobble
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Pink Quartz / Rose Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
SiO2 (Silicon Dioxide) with traces of titanium, iron, or manganese
mineral
Sea Glass
Amorphous Silica (Anthropogenic glass) - SiO2
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (primarily SiO2 with Feldspar)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Sandstone (Quartz-rich Pebble)
Arenite (primarily SiO2)
sedimentary
White Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Pink Quartzite
Quartzite (SiO2)
metamorphic
Chalcedony (Agate/Quartz pebble)
Silicon dioxide (SiO2) - Microcrystalline Quartz
mineral
Quartz Crystal (Rough)
Silicon Dioxide (SiO2)
mineral
Quartz / Quartzite
Silicon Dioxide (SiO2)
Mineral / Metamorphic