Multi-Gemstone Quartz Bracelet (Amethyst, Aventurine, Rose Quartz, Clear Quartz)
Silicon Dioxide (SiO2) mixture
gemstone
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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Banded Agate (specifically Red Agate or Sardonyx variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Carnelian
Carnelian (a variety of Chalcedony, which is a microcrystalline quartz, SiO2)
Mineral (variety of Chalcedony)
Banded Agate (specifically Lake Superior Agate style)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Jasper (Red Jasper)
Jasper (Silicon Dioxide, SiO2)
mineral
Jasper (likely Kambaba or Crocodile Jasper variety)
Silicon Dioxide (SiO2) with inclusions
sedimentary
Dalmatian Jasper
Feldspar-Quartz Microgranite
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Jasper (specifically Owyhee or Picture Jasper variety)
Jasper (Silicon Dioxide, SiO2)
sedimentary
Chalcedony (Common Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Chert / Flint
Microcrystalline quartz (SiO2)
sedimentary
Milky Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chert (specifically Black Chert or Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (Flint)
Chert (SiO2)
sedimentary
Carnelian (a variety of Chalcedony)
Silicon Dioxide (SiO2) with iron oxide impurities
mineral
Jasper (specifically Bloodstone or Heliotrope variety)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary (chemically precipitated)
Larimar
NaCa2Si3O8(OH)
gemstone
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Red Jasper (Siltstone/Quartz variety)
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Chert / Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Cryptocrystalline quartz (SiO2)
sedimentary
Druzy Agate (specifically Black Druzy Agate)
Silicon Dioxide (SiO2)
mineral
Chert (often called Flint or Chalcedony Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Carnelian Agate Nodule
Chalcedony (SiO2) with Iron Oxide inclusions
sedimentary
Citrine or Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate and Carnelian varieties)
Silicon Dioxide (SiO2)
mineral
Banded Agate (specifically Moss Agate or Plume Agate variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Banded Agate (Onyx type)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Jasper (Green Jasper/Chert)
Silicon Dioxide (SiO2)
sedimentary
Tumbled chalcedony (likely milky agate)
Microcrystalline quartz, SiO₂ (chalcedony)
mineral
Chert
Chert (SiO2)
sedimentary
Blue Topaz
Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)
gemstone
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint Nodules)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Granite (specifically the Ubatuba variety)
Phaneritic Igneous Rock (Granodiorite/Monzogranite)
igneous
Crazy Lace Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral