Chert (Gravel pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Category
Mineral (Specifically A Cryptocrystalline Variety Of Quartz)
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
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Chert (specifically Tan/Yellow Chert)
Silicon Dioxide (SiO2)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Tumbled chalcedony (likely pale agate or quartz pebble)
Microcrystalline silica, SiO₂ (chalcedony; possibly quartz-rich agate)
mineral
Jasper with Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Chert (specifically Yellow Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Amygdaloidal Basalt with Epidote/Chlorite
Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))
igneous
Chert (Jasper variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Chert (Pink/Tan variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Septarian or Nodular variety)
Microcrystalline Quartz (SiO2)
sedimentary
Moonstone
Adularia (orthoclase feldspar variety)
mineral
Yellow Jasper
Jasper (Silicon Dioxide, SiO2 with iron inclusions)
sedimentary
Moss Agate and Druzy Quartz Carving
Cryptocrystalline Silica (SiO2) with impurities
mineral
Quartz (chalcedony variety) or Limestone with Quartz Veins
SiO2 (for Quartz/Chalcedony); CaCO3 (for Limestone)
Mineral or Sedimentary Rock (with mineral inclusions)
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2)
Sedimentary Rock
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Basalt with Epidote Veining
Basalt (Mafic Extrusive Rock) with Ca2(Al,Fe)3(SiO4)3(OH)
igneous
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Orgonite Pyramid (containing Amethyst and mixed minerals)
Silicon Dioxide (SiO2) in synthetic resin
gemstone
Yellow Quartz (Citrinated Quartz)
Silicon Dioxide (SiO2)
mineral
Banded Jasper / Yellow Jasper with Chlorite or Epidote inclusions
Silicon Dioxide (SiO2) with iron oxide and silicate impurities
sedimentary
Ocean Jasper
Silicon Dioxide (SiO2) with iron and other mineral inclusions
mineral
Citrine Quartz
Crystalline Silicon Dioxide (SiO2) with Ferric Iron impurities
mineral
Obsidian
Obsidian (volcanic glass)
igneous
Chert (Brown Variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flinty variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Banded Variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Amethyst
Silicon dioxide (SiO2) with iron impurities
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Shiva Lingam
Cryptocrystalline Quartz (Jasperiod Silicate with Iron Oxide inclusions)
sedimentary
Moss Agate
Silicon Dioxide (Chalcedony variety) with green hornblende or chlorite inclusions - SiO2
gemstone
Quartz
Silicon dioxide (SiO2)
Mineral
Carnelian Agate
Silicon Dioxide (SiO2) - Variety: Chalcedony
mineral
Chert (specifically Jasper/Flint)
Chert (SiO2)
sedimentary
Mookaite Jasper
Siliceous (chert) sedimentary rock, a form of Jasper
Sedimentary
Chert (White/Light Tan)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary