Amethyst geode fragment
Quartz, SiO₂; purple color from irradiation-related iron impurities
Category
Browse mineral, variety of quartz specimens identified by the Rock Identifier community.
Amethyst geode fragment
Quartz, SiO₂; purple color from irradiation-related iron impurities
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Quartz
Silicon Dioxide (SiO2)
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
Brown quartz-rich stone, possibly smoky quartz or quartzite
Quartz (SiO₂), potentially in a quartzite or silica-rich matrix
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Rhyolitic jasper / brecciated jasper
Silica-rich volcanic rock, chiefly microcrystalline quartz (SiO₂), with iron-oxide and clay/mineral impurities
Granite
Granite
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
Grey Quartz (likely Smoky Quartz or Milky Quartz)
Silicon Dioxide (SiO2)
Citrine
Silicon Dioxide (SiO2)
Quartz (Rose or Milky Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz (Clear Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Banded Agate
Cryptocrystalline variety of Quartz (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Polished agate/geode fragment
Microcrystalline quartz (chalcedony), SiO₂, with possible calcite or quartz cavity lining
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Quartz
Silicon Dioxide (SiO2)
Fuchsite (Chrome Mica)
K(Al,Cr)2(AlSi3O10)(OH)2
Citrine
Silicon dioxide (SiO2)
Fancy Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)