Chert (Flint)
Microcrystalline or cryptocrystalline quartz (SiO2)
Category
Browse mineral, specifically a variety of quartz specimens identified by the Rock Identifier community.
Chert (Flint)
Microcrystalline or cryptocrystalline quartz (SiO2)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Diorite
Diorite (Intermediate intrusive igneous rock)
Chalcedony
Cryptocrystalline Quartz (SiO2)
Druzy Quartz
Quartz (Silicon Dioxide, SiO2)
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony / Quartz Variety
Amethyst Geode (Thunderegg)
Silicon Dioxide (SiO2) - Quartz Variety: Amethyst
Blue Chalcedony Geode (with Quartz Druzy)
Silicon Dioxide (SiO2) - Microcrystalline variety of Quartz
Amethyst
Amethyst (Quartz variety), Silicon Dioxide (SiO2)
Dyed Blue Agate (Slab)
Agate (Variety of Chalcedony/Microcrystalline Quartz), SiO2
Green Aventurine
Quartz (Aventurine variety) - SiO₂ with Fuchsite inclusions
Ferruginous Quartz (Iron-stained Quartzite)
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
Citrine
Quartz (SiO₂)
Chert / Flint
Silicon dioxide (SiO2)
Raw Citrine
Citrine (Silicon Dioxide - SiO2)
Amazonite
Amazonite (KAlSi3O8, a triclinic variety of Potassium Feldspar)
Quartz (Smoky or Clear variety with inclusions)
Silicon Dioxide (SiO2)
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal Fragments)
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Rose Quartz
Rose Quartz (SiO₂)
Quartz (Milky/Yellowish variety)
Silicon Dioxide (SiO2)
Sandstone (Micaceous/Feldspathic variant)
Arenite (specifically subarkose or lithic arenite)
Chert (Flint)
Silicon Dioxide (SiO2)
Orthoclase Feldspar
KAlSi3O8 (Potassium aluminum silicate)
Chert and Chalcedony
Cryptocrystalline Quartz (SiO2)
Jasper with Quartz Vein
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chalcedony (Agate)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Unakite
Epidote-Feldspar rock
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles
Mixed gemstones (primarily Silicon Dioxide - SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Chert (White Chert)
Silicon Dioxide (SiO2)
Brown Jasper
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Clastic Sedimentary Rock (SiO2 with Fe2O3/FeOOH cement)
Tiger's Eye
Tiger's Eye (a variety of Chalcedony, which is a microcrystalline quartz with fibrous inclusions of oxidized crocidolite)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (specifically Flint or Common Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (specifically Blue or Grey Chert/Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Eye Agate (Sulemani Agate)
Banded Chalcedony (SiO2)