Chalcedony (specifically Agate and Carnelian variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Category
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
Chalcedony (specifically Agate and Carnelian variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Chert (Smooth River Pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Chert (often called Flint)
Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)
Banded Agate / Lace Agate
Agate (Silica/Quartz) - SiO2
Chert (Yellow Jasper)
Silicon Dioxide (SiO2)
Picture Jasper (specifically Biggs or Deschutes variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Rose Quartz
Quartz (SiO₂), specifically a variety of Quartz
Milky Quartz
Silicon Dioxide (SiO2)
Agate
Agate (Silicon Dioxide, SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Flint
Microcrystalline Quartz (SiO2)
Tumbled Quartz (Snow Quartz)
Silicon Dioxide (SiO2)
Agate (specifically a Banded Agate with a Quartz Druzy center)
Silicon Dioxide (SiO2)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Green Jasper with Agate Banding
Silicon Dioxide (SiO2) with impurities of ferrous silicate or chlorite
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Agate (specifically Carnelian Agate or Lake Superior style Agate)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Citrine Quartz carving
Silicon Dioxide (SiO2)
Flint
SiO2 (Cryptocrystalline Quartz / Chert)
Milky Quartz
Silicon Dioxide (SiO2)
Blue Lace Agate (Tumbled)
Silicon Dioxide (SiO2) with trace minerals
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Chert (Silicon Dioxide, SiO2)
Chert (Flint variety)
Chert (SiO2)
Chert (containing Flint nodules)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Chalcedony (specifically Blue Chalcedony or Common Opal variety)
Silicon Dioxide (SiO₂)
Bloodstone
Heliotrope (a variety of Chalcedony, SiO₂ with inclusions)
Jasper Conglomerate (Puddingstone)
Siliceous Conglomerate (Quartz and Jasper clasts in a fine-grained matrix)
Multi-Gemstone Quartz Bracelet (Amethyst, Aventurine, Rose Quartz, Clear Quartz)
Silicon Dioxide (SiO2) mixture
Milky Quartz
Silicon Dioxide (SiO2)
Blue Quartz (or Blue Aventurine)
Silicon Dioxide (SiO2) with inclusions (typically Crocidolite or Dumortierite)
Chert (Yellow Jasper varieties)
Microcrystalline Quartz (SiO2)
Blue Topaz
Aluminum Silicate Fluoride Hydroxide - Al2SiO4(F,OH)2
Milky Quartz in Matrix
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline quartz (SiO2)
Chert (Pink/Red variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Banded Agate (specifically Sardonyx)
Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz
Carnelian
Cryptocrystalline Quartz (SiO2)
Yellow Jasper
Tectosilicates (SiO2) with Goethite/Iron oxide inclusions