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

Weathered jasper pebble (probable red jasper/chert) (Microcrystalline quartz, SiO₂, colored mainly by iron oxides) — sedimentary

Weathered jasper pebble (probable red jasper/chert)

Microcrystalline quartz, SiO₂, colored mainly by iron oxides

Polished red jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides) — mineral

Polished red jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides

Yellow chalcedony (likely lemon/citrine-colored agate) (Microcrystalline quartz, SiO₂ (chalcedony)) — mineral

Yellow chalcedony (likely lemon/citrine-colored agate)

Microcrystalline quartz, SiO₂ (chalcedony)

Tumbled banded agate (Chalcedony (microcrystalline quartz), SiO₂) — mineral

Tumbled banded agate

Chalcedony (microcrystalline quartz), SiO₂

Tumbled carnelian (red-orange chalcedony) (Carnelian, a microcrystalline variety of quartz; SiO₂) — mineral

Tumbled carnelian (red-orange chalcedony)

Carnelian, a microcrystalline variety of quartz; SiO₂

Tumbled carnelian (Carnelian, orange chalcedony (microcrystalline SiO₂)) — gemstone

Tumbled carnelian

Carnelian, orange chalcedony (microcrystalline SiO₂)

Chalcedony (Yellow Jasper or Agate) (Microcrystalline Quartz (SiO2)) — mineral

Chalcedony (Yellow Jasper or Agate)

Microcrystalline Quartz (SiO2)

Chrysocolla (Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla

Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O

Yellow Chert (Chert / Cryptocrystalline Quartz) (Silicon Dioxide (SiO2)) — sedimentary

Yellow Chert (Chert / Cryptocrystalline Quartz)

Silicon Dioxide (SiO2)

Chalcedony (Agate nodule fragment) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate nodule fragment)

Silicon Dioxide (SiO2)

Green Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Green Jasper

Microcrystalline Quartz (SiO2)

Chert (Jasper variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)

Polished brown jasper pebble (Jasper, a microcrystalline variety of quartz (SiO₂), typically with iron-oxide inclusions) — mineral

Polished brown jasper pebble

Jasper, a microcrystalline variety of quartz (SiO₂), typically with iron-oxide inclusions

Petrified Wood (Silicified wood (SiO2)) — fossil

Petrified Wood

Silicified wood (SiO2)

Tumbled brown jasper (Jasper, microcrystalline quartz (SiO₂), commonly with iron-oxide impurities) — mineral

Tumbled brown jasper

Jasper, microcrystalline quartz (SiO₂), commonly with iron-oxide impurities

Banded chert or jasper pebble (Microcrystalline quartz (SiO₂), commonly with iron-oxide and clay impurities) — sedimentary

Banded chert or jasper pebble

Microcrystalline quartz (SiO₂), commonly with iron-oxide and clay impurities

Tumbled agate (likely moss or dendritic agate) (Microcrystalline quartz, chiefly chalcedony (SiO₂), with iron-oxide and possible manganese inclusions) — mineral

Tumbled agate (likely moss or dendritic agate)

Microcrystalline quartz, chiefly chalcedony (SiO₂), with iron-oxide and possible manganese inclusions

Agate (Silicon Dioxide (SiO2) - Chalcedony variant) — mineral

Agate

Silicon Dioxide (SiO2) - Chalcedony variant

Polished brown agate (likely sardonyx/chalcedony) (Microcrystalline quartz, SiO₂; brown chalcedony with possible iron-oxide staining) — mineral

Polished brown agate (likely sardonyx/chalcedony)

Microcrystalline quartz, SiO₂; brown chalcedony with possible iron-oxide staining

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Tumbled chalcedony (likely agate or jasper) (Microcrystalline quartz, SiO₂ (chalcedony)) — mineral

Tumbled chalcedony (likely agate or jasper)

Microcrystalline quartz, SiO₂ (chalcedony)

Agate / Chalcedony Nodule (SiO2 - Silicon Dioxide) — mineral

Agate / Chalcedony Nodule

SiO2 - Silicon Dioxide

Dyed Quartz (often sold as 'Blue Quartz' or 'Blue Agate') (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Quartz (often sold as 'Blue Quartz' or 'Blue Agate')

Silicon Dioxide (SiO2) with artificial pigment

Jasper / Chert (river tumbled) (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper / Chert (river tumbled)

Microcrystalline Quartz (SiO2)

River Pebble (Weathered Rock Fragment) — sedimentary

River Pebble

Weathered Rock Fragment

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Polished ocean jasper (orbicular jasper) (Microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and other mineral inclusions) — sedimentary

Polished ocean jasper (orbicular jasper)

Microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and other mineral inclusions

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

Quartz (Chalcedony)

Silicon Dioxide (SiO2)

Botryoidal chalcedony (likely agate/jasper variety) (Microcrystalline quartz, SiO₂) — mineral

Botryoidal chalcedony (likely agate/jasper variety)

Microcrystalline quartz, SiO₂

Tumbled banded agate (Chalcedony (microcrystalline quartz), SiO₂) — mineral

Tumbled banded agate

Chalcedony (microcrystalline quartz), SiO₂

Jasper and Quartz Pebble (Silicon dioxide (SiO2) microcrystalline quartz) — sedimentary

Jasper and Quartz Pebble

Silicon dioxide (SiO2) microcrystalline quartz

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Yellow Quartz / Chalcedony Pebble (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz / Chalcedony Pebble

Silicon Dioxide (SiO2)

Polished banded jasper pebble (Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide and clay/mineral impurities) — mineral

Polished banded jasper pebble

Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide and clay/mineral impurities

Chert nodules (Microcrystalline Quartz (SiO2)) — sedimentary

Chert nodules

Microcrystalline Quartz (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Tumbled red jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly colored by iron oxides) — mineral

Tumbled red jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly colored by iron oxides

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

Chalcedony (Agate / Jasper Pebble)

Silicon Dioxide (SiO2)

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

Botryoidal Chalcedony / Quartz

Silicon Dioxide (SiO2)

Polished red jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides) — mineral

Polished red jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides

Tumbled banded agate (likely blue lace agate) (Microcrystalline quartz, SiO₂ (chalcedony variety)) — mineral

Tumbled banded agate (likely blue lace agate)

Microcrystalline quartz, SiO₂ (chalcedony variety)

Tumbled brown jasper pebble (Jasper, microcrystalline quartz (SiO₂), commonly with iron-oxide impurities) — mineral

Tumbled brown jasper pebble

Jasper, microcrystalline quartz (SiO₂), commonly with iron-oxide impurities