Rock Identifier

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.

Learn about Mineral (Specifically A Variety Of Chalcedony, Which Is A Microcrystalline Quartz) in the encyclopedia

Chalcedony

Blue Chalcedony

Blue Chalcedony

Flower Jasper

Feather Jasper

Red Jasper

Brown Jasper

Prase

Dendritic Jasper

Royal Imperial Jasper

Scenic Jasper

Carrasite Jasper

Map Jasper

Crazy Lace Agate (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Crazy Lace Agate

Chalcedony (Silicon Dioxide, SiO2)

Chrysoprase (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Chrysoprase

Chalcedony (Silicon Dioxide, SiO2)

Tumbled brown jasper (Microcrystalline quartz/chalcedony (SiO₂), commonly iron-stained) — mineral

Tumbled brown jasper

Microcrystalline quartz/chalcedony (SiO₂), commonly iron-stained

Blue Lace Agate (Tumbled) (Silicon Dioxide (SiO2) with trace minerals) — mineral

Blue Lace Agate (Tumbled)

Silicon Dioxide (SiO2) with trace minerals

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

Tumbled pale agate or chalcedony

Microcrystalline quartz (SiO₂), likely agate/chalcedony

Polished brecciated jasper (Microcrystalline quartz (chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions) — mineral

Polished brecciated jasper

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

Blue-gray chalcedony (likely agate/jasper fragment) (Microcrystalline quartz, SiO₂ (chalcedony)) — mineral

Blue-gray chalcedony (likely agate/jasper fragment)

Microcrystalline quartz, SiO₂ (chalcedony)

Ocean Jasper (Orbicular Jasper/Microcrystalline Quartz (SiO2)) — sedimentary

Ocean Jasper

Orbicular Jasper/Microcrystalline Quartz (SiO2)

Geode (Quartz nodule / Chalcedony-lined cavity) — sedimentary

Geode

Quartz nodule / Chalcedony-lined cavity

Tumbled blue chalcedony (possibly blue agate) (Microcrystalline quartz, SiO₂; chalcedony variety) — mineral

Tumbled blue chalcedony (possibly blue agate)

Microcrystalline quartz, SiO₂; chalcedony variety

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

Tumbled chalcedony (likely moss or dendritic agate)

Microcrystalline quartz, SiO₂, with iron-oxide inclusions

Iron-stained chalcedony or jasper (Microcrystalline quartz (SiO₂), likely ferruginous jasper/chalcedony) — mineral

Iron-stained chalcedony or jasper

Microcrystalline quartz (SiO₂), likely ferruginous jasper/chalcedony

Jasper Agate (specifically Brecciated Jasper) (Silicon Dioxide (SiO2) with iron oxide and clay impurities) — sedimentary

Jasper Agate (specifically Brecciated Jasper)

Silicon Dioxide (SiO2) with iron oxide and clay impurities

Bumblebee Jasper (Fossiliferous Volcanic Rock (composed of Calcium Carbonate, Manganese Oxides, and Arsenic Sulfides)) — igneous

Bumblebee Jasper

Fossiliferous Volcanic Rock (composed of Calcium Carbonate, Manganese Oxides, and Arsenic Sulfides)

Jasper (SiO2) — mineral

Jasper

SiO2

Yellow Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

Chalcedony (Silicon dioxide (SiO2) - Microcrystalline quartz) — mineral

Chalcedony

Silicon dioxide (SiO2) - Microcrystalline quartz

Polished brecciated jasper (Jasper, microcrystalline quartz (SiO₂), with iron-oxide and pale silica-rich fragments) — mineral

Polished brecciated jasper

Jasper, microcrystalline quartz (SiO₂), with iron-oxide and pale silica-rich fragments

Black Onyx (Silicon Dioxide (SiO2)) — mineral

Black Onyx

Silicon Dioxide (SiO2)

Jasper (specifically Oolitic or Brecciated Jasper) (Silicon Dioxide (SiO₂)) — sedimentary

Jasper (specifically Oolitic or Brecciated Jasper)

Silicon Dioxide (SiO₂)

Agate (Silicon Dioxide (Chalcedony variety), SiO2) — gemstone

Agate

Silicon Dioxide (Chalcedony variety), SiO2

Tumbled chalcedony (likely orange agate/carnelian) (Microcrystalline quartz, SiO₂; chalcedony with iron-oxide coloration) — mineral

Tumbled chalcedony (likely orange agate/carnelian)

Microcrystalline quartz, SiO₂; chalcedony with iron-oxide coloration

Red Jasper (Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Tumbled chalcedony or quartz pebble (Microcrystalline quartz, SiO₂ (likely chalcedony); exact identification is uncertain from the image) — mineral

Tumbled chalcedony or quartz pebble

Microcrystalline quartz, SiO₂ (likely chalcedony); exact identification is uncertain from the image

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

Chalcedony (Agate/Chert)

Silicon Dioxide (SiO2)

Chert or chalcedony fragment (Microcrystalline quartz (SiO₂), likely ferruginous chalcedony/jasper) — mineral

Chert or chalcedony fragment

Microcrystalline quartz (SiO₂), likely ferruginous chalcedony/jasper

Tumbled carnelian (Chalcedony (microcrystalline quartz), SiO₂; iron-colored variety) — gemstone

Tumbled carnelian

Chalcedony (microcrystalline quartz), SiO₂; iron-colored variety

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

Chert / Jasper

Microcrystalline Quartz (SiO2)

Tumbled brown jasper (probable) (Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide impurities) — mineral

Tumbled brown jasper (probable)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide impurities

Orange chalcedony or jasper fragment (Microcrystalline quartz (SiO₂), likely chalcedony/jasper) — mineral

Orange chalcedony or jasper fragment

Microcrystalline quartz (SiO₂), likely chalcedony/jasper

Greenstone (Greenschist / Greenstone (contains epidote, chlorite, and actinolite)) — metamorphic

Greenstone

Greenschist / Greenstone (contains epidote, chlorite, and actinolite)

Tumbled banded agate (Microcrystalline quartz (chalcedony), SiO₂) — mineral

Tumbled banded agate

Microcrystalline quartz (chalcedony), SiO₂

Jasper and Chalcedony Composite (Silicon Dioxide (SiO2) microcrystalline quartz) — sedimentary

Jasper and Chalcedony Composite

Silicon Dioxide (SiO2) microcrystalline quartz

Blue Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Blue Chalcedony

Cryptocrystalline Quartz (SiO2)

Jasper (SiO2 (Cryptocrystalline quartz)) — mineral

Jasper

SiO2 (Cryptocrystalline quartz)

Polished brown jasper pebble (Microcrystalline quartz (SiO₂), commonly iron-oxide-rich jasper) — mineral

Polished brown jasper pebble

Microcrystalline quartz (SiO₂), commonly iron-oxide-rich jasper

Tumbled jasper (Microcrystalline quartz (SiO₂), colored by iron oxides and other impurities) — mineral

Tumbled jasper

Microcrystalline quartz (SiO₂), colored by iron oxides and other impurities

Polished orbicular jasper (likely ocean jasper) (Jasper, microcrystalline quartz (SiO₂), with iron-oxide and volcanic-mineral inclusions) — mineral

Polished orbicular jasper (likely ocean jasper)

Jasper, microcrystalline quartz (SiO₂), with iron-oxide and volcanic-mineral inclusions

Rhyolitic jasper / brecciated jasper (Silica-rich volcanic rock, chiefly microcrystalline quartz (SiO₂), with iron-oxide and clay/mineral impurities) — igneous

Rhyolitic jasper / brecciated jasper

Silica-rich volcanic rock, chiefly microcrystalline quartz (SiO₂), with iron-oxide and clay/mineral impurities

Yellow Jasper (Chalcedony (SiO2) with goethite or limonite inclusions) — sedimentary

Yellow Jasper

Chalcedony (SiO2) with goethite or limonite inclusions

Yellow Jasper (Silicon Dioxide (SiO2) - variety Jasper) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) - variety Jasper

Red Tiger's Eye beads (Tiger's Eye (variety of Chalcedony, SiO2)) — Mineral / Gemstone (variety of Quartz)

Red Tiger's Eye beads

Tiger's Eye (variety of Chalcedony, SiO2)

Mineral / Gemstone (variety of Quartz)