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

Polished agate geode slice (Microcrystalline quartz (chalcedony), SiO₂, with possible quartz-lined or calcite-filled cavity) — mineral

Polished agate geode slice

Microcrystalline quartz (chalcedony), SiO₂, with possible quartz-lined or calcite-filled cavity

Banded Agate (Cryptocrystalline variety of Quartz (SiO2)) — sedimentary

Banded Agate

Cryptocrystalline variety of Quartz (SiO2)

Tumbled milky quartz (Quartz (SiO₂), cryptocrystalline-to-massive variety) — mineral

Tumbled milky quartz

Quartz (SiO₂), cryptocrystalline-to-massive variety

Agate geode fragment (Banded chalcedony (microcrystalline SiO₂), lining a geode cavity) — mineral

Agate geode fragment

Banded chalcedony (microcrystalline SiO₂), lining a geode cavity

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Chert (often called Flint or Jasper) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Tumbled quartz-rich stone, possibly chalcedony or light sandstone (Quartz (SiO₂) if crystalline; possibly microcrystalline quartz (chalcedony) or quartz sandstone) — mineral

Tumbled quartz-rich stone, possibly chalcedony or light sandstone

Quartz (SiO₂) if crystalline; possibly microcrystalline quartz (chalcedony) or quartz sandstone

Blue Lace Agate (Cryptocrystalline Quartz (SiO2) with trace minerals) — mineral

Blue Lace Agate

Cryptocrystalline Quartz (SiO2) with trace minerals

Chalcedony Geode (Botryoidal Agate) (Silicon Dioxide (SiO2)) — mineral

Chalcedony Geode (Botryoidal Agate)

Silicon Dioxide (SiO2)

Bloodstone (Heliotrope) (SiO2 (Cryptocrystalline Quartz / Chalcedony)) — mineral

Bloodstone (Heliotrope)

SiO2 (Cryptocrystalline Quartz / Chalcedony)

Milky quartz pebble (Quartz (SiO₂), cryptocrystalline to massive variety) — mineral

Milky quartz pebble

Quartz (SiO₂), cryptocrystalline to massive variety

Tumbled milky quartz (Quartz, silicon dioxide (SiO₂)) — mineral

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

Chalcedony / Agate Pebble (Silicon Dioxide (SiO2)) — mineral

Chalcedony / Agate Pebble

Silicon Dioxide (SiO2)

Chalcedony in Matrix (Silicon Dioxide (SiO2)) — mineral

Chalcedony in Matrix

Silicon Dioxide (SiO2)

Moss Agate (Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide) — mineral

Moss Agate

Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide

Carnelian (Carnelian (Silicon Dioxide - SiO2)) — mineral

Carnelian

Carnelian (Silicon Dioxide - SiO2)

Blue Chalcedony (Agate) (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony (Agate)

Silicon Dioxide (SiO2)

Chrysoprase (Nickel-bearing Chalcedony (SiO2 with Ni impurities)) — mineral

Chrysoprase

Nickel-bearing Chalcedony (SiO2 with Ni impurities)

Blue Lace Agate Geode Nodules (Chalcedony (cryptocrystalline Quartz, SiO2)) — mineral

Blue Lace Agate Geode Nodules

Chalcedony (cryptocrystalline Quartz, SiO2)

Carnelian (Carnelian (Cryptocrystalline Quartz, SiO2)) — mineral

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Carnelian (Carnelian (Cryptocrystalline Quartz, SiO2)) — mineral

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Carnelian (Carnelian (Cryptocrystalline Quartz, SiO2)) — mineral

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Carnelian (Carnelian (Cryptocrystalline Quartz, SiO2)) — mineral

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Chalcedony (Agate) (Chalcedony (Cryptocrystalline Quartz, SiO2)) — mineral

Chalcedony (Agate)

Chalcedony (Cryptocrystalline Quartz, SiO2)

Lake Superior Agate (Chalcedony (cryptocrystalline Quartz), SiO2) — mineral

Lake Superior Agate

Chalcedony (cryptocrystalline Quartz), SiO2

Bloodstone (Heliotrope (Cryptocrystalline Quartz, SiO2)) — mineral

Bloodstone

Heliotrope (Cryptocrystalline Quartz, SiO2)

Dyed Pink Agate Slice (Cryptocrystalline variety of Quartz (SiO2)) — mineral

Dyed Pink Agate Slice

Cryptocrystalline variety of Quartz (SiO2)

Banded Agate (Carnelian type) (Agate (Cryptocrystalline Quartz, SiO2)) — mineral

Banded Agate (Carnelian type)

Agate (Cryptocrystalline Quartz, SiO2)

Banded Agate (specifically Lake Superior Agate style) (Agate (Cryptocrystalline Quartz, SiO2)) — mineral

Banded Agate (specifically Lake Superior Agate style)

Agate (Cryptocrystalline Quartz, SiO2)

Yellow Agate (Chalcedony (cryptocrystalline Quartz), SiO2) — mineral

Yellow Agate

Chalcedony (cryptocrystalline Quartz), SiO2

Bloodstone (Heliotrope (Cryptocrystalline Quartz, SiO2)) — mineral

Bloodstone

Heliotrope (Cryptocrystalline Quartz, SiO2)

Carnelian (Chalcedony (cryptocrystalline quartz), SiO2) — Mineral

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2

Agate Geode (Unopened) (Cryptocrystalline Quartz (SiO2) with Chalcedony) — mineral

Agate Geode (Unopened)

Cryptocrystalline Quartz (SiO2) with Chalcedony

Bloodstone (Heliotrope (Cryptocrystalline Quartz, SiO2)) — mineral

Bloodstone

Heliotrope (Cryptocrystalline Quartz, SiO2)

Carnelian (Carnelian (Cryptocrystalline Quartz, SiO2)) — mineral

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Blue Dyed Agate Geode (Chalcedony (cryptocrystalline Quartz), SiO2) — mineral

Blue Dyed Agate Geode

Chalcedony (cryptocrystalline Quartz), SiO2

Agate (Agate (Cryptocrystalline Quartz, SiO2)) — Mineral

Agate

Agate (Cryptocrystalline Quartz, SiO2)

Agate (Bead Form) (Agate (Cryptocrystalline Quartz, SiO2)) — mineral

Agate (Bead Form)

Agate (Cryptocrystalline Quartz, SiO2)

Carnelian (Carnelian (Cryptocrystalline Quartz, SiO2)) — mineral

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Agate Jasper (Cryptocrystalline Quartz (SiO2) with impurities) — mineral

Agate Jasper

Cryptocrystalline Quartz (SiO2) with impurities

Carnelian (Carnelian (Cryptocrystalline Quartz, SiO2)) — mineral

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Dragon Vein Agate (Chalcedony (cryptocrystalline Quartz), SiO2) — mineral

Dragon Vein Agate

Chalcedony (cryptocrystalline Quartz), SiO2