Blue Chalcedony
Silicon Dioxide (SiO2)
Category
Browse mineral (specifically a variety of chalcedony, which is a microcrystalline quartz) specimens identified by the Rock Identifier community.
Blue Chalcedony
Silicon Dioxide (SiO2)
Red Jasper
Jasper (a cryptocrystalline variety of Quartz, SiO₂)
Quartz
Silicon Dioxide (SiO2)
Hypersthene
Hypersthene ((Mg,Fe)SiO₃)
Quartz Crystal (specifically a milky or semi-translucent single crystal point)
Silicon Dioxide (SiO2)
Rough Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Quartz (Citrine)
Silicon Dioxide (SiO2)
Pink Granite
Granite (Felsic Plutonic Rock)
Jasper
Jasper (Silicon Dioxide, SiO2)
Jasper
Jasper (Silica/Silicon Dioxide, SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Pink Granite
Granite (Alkali Feldspar Granite)
Jasper with Agate Inclusions
Jasper (Silicon Dioxide, SiO2) with Chalcedony/Agate
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2)
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Chert
Microcrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Chert (and/or River Pebble)
Microcrystalline quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Chert (specifically Yellow/Brown Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Banded Agate
Cryptocrystalline Quartz (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron impurities
Glauconitic Sandstone (Greensand)
Glauconitic Sandstone ((K, Na)(Fe3+, Al, Mg)2(Si, Al)4O10(OH)2)
Red Jasper
Silicon Dioxide (SiO2) with iron inclusions
Carnelian
Silicon Dioxide (SiO2) - variety of Chalcedony
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Jasper with Agate and Quartz Inclusions
Silicon Dioxide (SiO2) - Chalcedony / Quartz aggregate
Dyed Chalcedony (Agate)
Silicon Dioxide (SiO2) with artificial pigment
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)