Dalmatian Stone (commonly called Dalmatian Jasper)
Peralkaline Rock (mixed Feldspar, Quartz, and Arfvedsonite)
igneous
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is A Microcrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is a microcrystalline quartz) specimens identified by the Rock Identifier community.
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Gneiss (specifically a granitic gneiss cobble)
Gneiss (high-grade regional metamorphic rock)
metamorphic
Dyed Agate Slice
Silicon Dioxide (SiO2) with artificial colorants
Mineral (variety of Chalcedony)
Yellow Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
mineral
Tourmalinated Quartz
Silicon Dioxide (SiO2) with Schorl inclusions (NaFe2+3Al6(BO3)3Si6O18(OH)4)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Jasper with Agate Inclusions
Silicon Dioxide (SiO2)
sedimentary
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
White Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Carnelian
Carnelian (a variety of Chalcedony, SiO2) colored by iron oxide
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Jasper with Iron Staining
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) impurities
sedimentary
Carnelian
Carnelian (variety of Chalcedony, SiO2 with iron oxide impurities)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Agate (translucent slice)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Nephrite Jade
Nephrite
Mineral/Rock
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Cloudy Quartz
Silicon Dioxide (SiO2)
mineral
Chert (and Flint)
Silicon Dioxide (SiO2)
sedimentary
Quartz (Common or Milky)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Rose Quartz variety)
Silicon Dioxide (SiO2)
mineral
Agate (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Jasper
Jasper (Cryptocrystalline Quartz, SiO2)
sedimentary
Geode with Quartz/Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Moonstone (Adularia)
Potassium aluminum silicate (KAlSi3O8)
mineral
Chert / Flint
Cryptocrystalline quartz (SiO2)
sedimentary
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
metamorphic
Chert (specifically Jasper or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Milk Quartz (Common White Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Amethyst Geode/Cluster
Quartz (SiO2) - variety Amethyst
Mineral
Quartz Pebble (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral