Rock Identifier

Category

Mineral (Cryptocrystalline Quartz)

Browse mineral (cryptocrystalline quartz) specimens identified by the Rock Identifier community.

Learn about Mineral (Cryptocrystalline Quartz) in the encyclopedia

Lithium Quartz

Dumortierite Quartz

Dumortierite Quartz

Garden Quartz

Blue Quartz

Phantom Quartz

Chalcedony

Black Onyx

Super Seven

Aventurine

Landscape Agate

Landscape Agate

Tube Agate

Prase

Agate Geode / Thunderegg (Chalcedony (cryptocrystalline variety of Quartz), SiO2) — mineral

Agate Geode / Thunderegg

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Crazy Lace Agate (Cryptocrystalline Quartz (Silicon Dioxide, SiO2)) — mineral

Crazy Lace Agate

Cryptocrystalline Quartz (Silicon Dioxide, SiO2)

Carnelian (Red Agate/Chalcedony) (Cryptocrystalline Quartz (SiO2) with Hematite impurities) — mineral

Carnelian (Red Agate/Chalcedony)

Cryptocrystalline Quartz (SiO2) with Hematite impurities

Banded Agate (Chalcedony (cryptocrystalline variety of Quartz), SiO2) — mineral

Banded Agate

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Lake Superior Agate (Cryptocrystalline Quartz (SiO2 with Iron impurities)) — mineral

Lake Superior Agate

Cryptocrystalline Quartz (SiO2 with Iron impurities)

Agate (Geode nodule fragment) (Chalcedony (cryptocrystalline variety of Quartz), SiO2) — mineral

Agate (Geode nodule fragment)

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Agate (specifically Lake Superior Agate style or Banded Chalcedony) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Agate (specifically Lake Superior Agate style or Banded Chalcedony)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Banded Agate (specifically Black Sardonyx/Onyx variety) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Banded Agate (specifically Black Sardonyx/Onyx variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Chert (specifically Jasper/Flint pebble) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Jasper/Flint pebble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Tumbled yellow jasper or chert (Microcrystalline quartz (SiO₂), likely iron-stained jasper/chert) — mineral

Tumbled yellow jasper or chert

Microcrystalline quartz (SiO₂), likely iron-stained jasper/chert

Red/orange chalcedony (carnelian), possibly dyed or heat-treated (Chalcedony, cryptocrystalline SiO₂ (quartz variety)) — mineral

Red/orange chalcedony (carnelian), possibly dyed or heat-treated

Chalcedony, cryptocrystalline SiO₂ (quartz variety)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Yellow Jasper (Cryptocrystalline Quartz (SiO2 with iron inclusions)) — sedimentary

Yellow Jasper

Cryptocrystalline Quartz (SiO2 with iron inclusions)

Chert (Flint Nodules) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint Nodules)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (variously known as Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variously known as Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Grey Chert) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Grey Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (Chert / Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (often called Flint in this context) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint in this context)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Lake Superior Agate (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Lake Superior Agate

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Polished green jasper pebble (Jasper, an opaque microcrystalline variety of quartz (SiO₂), with pale quartz or chalcedony veining) — mineral

Polished green jasper pebble

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with pale quartz or chalcedony veining

Banded Agate (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Banded Agate

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Banded Agate (specifically Carnelian Agate slice) (Chalcedony (cryptocrystalline variety of Quartz), SiO2) — mineral

Banded Agate (specifically Carnelian Agate slice)

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Chert (variant Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variant Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Tumbled brecciated jasper (Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide-rich matrix or veining) — mineral

Tumbled brecciated jasper

Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide-rich matrix or veining

Granite (Intrusive igneous rock) — igneous

Granite

Intrusive igneous rock

Botryoidal Chalcedony / Quartz (Silicon Dioxide (SiO2)) — mineral

Botryoidal Chalcedony / Quartz

Silicon Dioxide (SiO2)

Quartz Geode (SiO2 (Silicon Dioxide)) — sedimentary

Quartz Geode

SiO2 (Silicon Dioxide)

Polished leopard-skin jasper (orbicular jasper) (Silicified microcrystalline quartz/chalcedony, commonly with iron-oxide and manganese-oxide inclusions) — metamorphic

Polished leopard-skin jasper (orbicular jasper)

Silicified microcrystalline quartz/chalcedony, commonly with iron-oxide and manganese-oxide inclusions

Orange chalcedony (possibly carnelian) (Microcrystalline quartz, SiO₂; iron-bearing chalcedony) — mineral

Orange chalcedony (possibly carnelian)

Microcrystalline quartz, SiO₂; iron-bearing chalcedony

Botryoidal chalcedony (possibly agate/geode material) (Chalcedony, microcrystalline quartz (SiO₂)) — mineral

Botryoidal chalcedony (possibly agate/geode material)

Chalcedony, microcrystalline quartz (SiO₂)

Tumbled brown quartz/chalcedony (probable) (Quartz, SiO₂; possibly brown chalcedony or jasper) — mineral

Tumbled brown quartz/chalcedony (probable)

Quartz, SiO₂; possibly brown chalcedony or jasper

Tumbled Mixed Gemstones and Rocks (Various mineral species including quartz (SiO2) and silicate minerals) — mineral

Tumbled Mixed Gemstones and Rocks

Various mineral species including quartz (SiO2) and silicate minerals

Grey Chalcedony (Silicon Dioxide (SiO2)) — mineral

Grey Chalcedony

Silicon Dioxide (SiO2)

Blue Chalcedony (Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)) — mineral

Blue Chalcedony

Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)

Chert (specifically Blue Chert or Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Blue Chert or Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (specifically Gray/Blue Chert) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Gray/Blue Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chalcedony (Carnelian / Agate pebble) (Microcrystalline Quartz (SiO2)) — mineral

Chalcedony (Carnelian / Agate pebble)

Microcrystalline Quartz (SiO2)

Picture Jasper (SiO2, Microcrystalline Quartz) — mineral

Picture Jasper

SiO2, Microcrystalline Quartz

Tumbled blue-gray chalcedony (likely common agate/chalcedony) (Microcrystalline quartz, SiO₂ (chalcedony; possibly pale blue agate)) — mineral

Tumbled blue-gray chalcedony (likely common agate/chalcedony)

Microcrystalline quartz, SiO₂ (chalcedony; possibly pale blue agate)

Polished chalcedony (likely jasper or agate) (Microcrystalline quartz, SiO₂; chalcedony with iron-oxide inclusions) — mineral

Polished chalcedony (likely jasper or agate)

Microcrystalline quartz, SiO₂; chalcedony with iron-oxide inclusions