Tumbled jasper, likely red/brown jasper
Microcrystalline quartz (chalcedony), SiO₂, colored chiefly by iron oxides
Category
Browse mineral (variety of chalcedony) specimens identified by the Rock Identifier community.
Tumbled jasper, likely red/brown jasper
Microcrystalline quartz (chalcedony), SiO₂, colored chiefly by iron oxides
Chert / Jasper
Silicon Dioxide (SiO2)
Orbicular Jasper (Ocean Jasper tendency)
Silicon Dioxide (SiO2) with impurities
Jasper with Quartz Veins
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper Marble
Silicon Dioxide (SiO2) with Impurities
Banded Jasper
Silicon Dioxide (SiO2) with impurities
Blue Lace Agate
Silicon Dioxide (SiO2)
Chalcedony
Silicon Dioxide (SiO2)
Agate
SiO2
Onyx (beads)
SiO2 (Cryptocrystalline Quartz)
Tumbled jasper (likely brecciated or orbicular jasper)
Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide and other mineral inclusions
Agate Bookend / Quartz Geode
Silicon Dioxide (SiO2)
Banded Agate
Silicon Dioxide (SiO2)
Grey Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Milky Quartz
Silicon Dioxide (SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2)
Black Jasper (Etched)
Silicon Dioxide (SiO2) with impurities
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Yellow Jasper
Silicon Dioxide with iron inclusions (SiO2)
Yellow Jasper
Chalcedony (SiO2) with iron oxide inclusions
Banded Calcite (Mexican Onyx)
Calcite (CaCO3)
Banded Calcite (often sold as Onyx Marble)
Calcium Carbonate (CaCO3)
Banded Agate
Agate (Silicon Dioxide, SiO2)
Tumbled honey-brown chalcedony or agate
Microcrystalline quartz (SiO₂), likely chalcedony; exact identification requires testing
Blue Lace Agate
Banded Chalcedony (SiO2)
Agate
Cryptocrystalline Silicon Dioxide (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Red Jasper
Jasper (Silicon Dioxide) - SiO2
Tumbled Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron inclusions
Polished banded jasper pebble
Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide and clay/mineral impurities
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
Banded Agate / Chalcedony
Silicon Dioxide (SiO2) with trace impurities
Chalcedony
Silicon Dioxide (SiO₂)
Tumbled Carnelian and Quartz Mix
Silicon Dioxide (SiO2) with iron oxide impurities
Carnelian (Chalcedony)
Silicon Dioxide (SiO2) - variety of Chalcedony
Banded Jasper / Yellow Jasper with Chlorite or Epidote inclusions
Silicon Dioxide (SiO2) with iron oxide and silicate impurities
Carnelian (Banded Agate)
Carnelian Chalcedony (SiO2)
Polished brown jasper
Jasper (microcrystalline quartz, SiO₂), likely iron-oxide-rich variety
Blue Chalcedony
Silicon Dioxide (SiO2)