Agate (specifically Waterline or Onyx-type Agate)
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is microcrystalline quartz) specimens identified by the Rock Identifier community.
Learn about Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz) in the encyclopedia
View all →
Chalcedony (Tumbled Agate/Jasper)
Silicon dioxide (SiO2)
sedimentary
Peach Aventurine
Quartz variety (SiO2 + Hematite/Goethite inclusions)
mineral
Red jasper (likely polished/chipped fragment)
Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides
mineral
Banded Calcite (often sold as Caribbean Calcite or Mexican Onyx)
Calcium Carbonate (CaCO3)
mineral
Yellow Agate
Chalcedony (cryptocrystalline Quartz), SiO2
mineral
Jasper with Agate Inclusions
Silicon Dioxide (SiO2) - variety of Quartz/Chert
sedimentary
Polished red jasper
Jasper, opaque microcrystalline quartz (SiO₂) colored mainly by iron oxides
mineral
Dyed Imperial Jasper (Sea Sediment Jasper)
Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony
sedimentary
Tumbled pale quartz/chalcedony fragment
Quartz (SiO₂), possibly microcrystalline chalcedony
mineral
Banded Agate (Chert/Chaldcedony)
Silicon Dioxide (SiO₂)
mineral
Ocean Jasper
Spherulitic Chalcedony (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineralological
Carnelian
Carnelian (a variety of Chalcedony, SiO ₂)
Mineral (specifically a variety of Chalcedony, which is a cryptocrystalline quartz)
Chalcedony (likely common gray chalcedony)
Microcrystalline quartz, SiO₂
mineral
Jasper (or possibly Agate/Chalcedony) beads
SiO2 (Silicon Dioxide)
mineral
Blue Lace Agate (Tumbled)
Silicon Dioxide (SiO2) with trace minerals
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace elements of Titanium, Iron, or Manganese
mineral
Jasper (specifically Owyhee or Picture Jasper variety)
Jasper (Silicon Dioxide, SiO2)
sedimentary
Quartz (Chalcedony/Agate)
Silicon Dioxide (SiO2)
mineral
Blue Quartz (specifically Dumortierite Quartz)
SiO2 (Silicon Dioxide) with inclusions of AlAl6BSi3O18 (Dumortierite)
mineral
Beach Pebbles and Jasper
Quartz / Microcrystalline Silicon Dioxide (SiO2)
sedimentary
Chalcedony
Silicon dioxide (SiO2) - Microcrystalline quartz
mineral
Jasper
Chalcedony (Microcrystalline Quartz) - SiO2
sedimentary or metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Red Jasper (Siltstone or Chert-based Jasper)
Silicon dioxide with hematite (SiO2 + Fe2O3)
sedimentary
Chalcedony (Agate/Chert)
Silicon Dioxide (SiO2)
mineral
Gray chalcedony (microcrystalline quartz)
Chalcedony, SiO₂; likely common gray/blue-gray variety
mineral
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Polished red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides.
mineral
Tumbled chalcedony (likely carnelian or common agate)
Microcrystalline quartz, SiO₂; chalcedony variety
mineral
Weathered jasper/chert nodule
Microcrystalline quartz (SiO₂), likely iron- and clay-stained jasper or chert
sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Agate
Chalcedony (SiO2)
mineral
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral
Polished carnelian/chalcedony
Carnelian, a reddish-orange variety of microcrystalline quartz (SiO₂)
mineral
Green Aventurine
Aventurine (a variety of Quartz, SiO2)
Mineral