Agate (various color varieties)
SiO₂ (Silicon Dioxide)
Mineral (specifically a variety of Chalcedony, which is a microcrystalline quartz)
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.
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Carnelian (Orange Chalcedony)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Yellow Jasper
Silica (Silicon Dioxide, SiO2) with iron inclusions
sedimentary
Jasper
Silicon Dioxide (SiO2) with impurities (mostly Iron Oxides)
sedimentary
Carnelian
Carnelian (a variety of Chalcedony, which is a microcrystalline quartz, SiO2)
Mineral (variety of Chalcedony)
Red Jasper
Silicon Dioxide (SiO2) - variety Jasper
mineral
Dalmation Stone (often called Dalmatian Jasper)
Antiperthite-rich Microgranite
igneous
Chert
Microcrystalline quartz (SiO2)
sedimentary
Red Jasper Concretion
Cryptocrystalline Quartz (SiO2)
sedimentary
Tumbled chalcedony (possibly peach agate)
Microcrystalline quartz, SiO₂; agate is banded chalcedony
mineral
Fossil Coral
Hexagonaria (Rugose coral) / Rugosa
fossil
Red Jasper with Quartz and Hematite
Silicon Dioxide (SiO2) with Ferric Iron inclusions
sedimentary
Banded Agate (Polished Slice)
Chalcedony (SiO2) with Quartz
mineral
Argetine Blue Agate (Chalcendony variant)
Silicon Dioxide (SiO₂)
mineral
Chalcedony (Botryoidal Agate vein)
Chalcedony (Microcrystalline Quartz) - SiO2
mineral
Mixed collection of minerals and rocks (Jasper, Carnelian, Granite, and Quartz)
Silicon Dioxide (SiO2) with varying impurities for silicates and igneous aggregates
igneous, sedimentary, and metamorphic
Blue Lace Agate
Cryptocrystalline variety of Quartz (SiO2)
mineral
Onyx
Onyx (a variety of Chalcedony, SiO₂)
Mineral
Blue Lace Agate
Silicon Dioxide (SiO₂), a variety of Chalcedony
mineral
Yellow Agate
Silicon Dioxide (SiO2)
mineral
Green Agate
Silicon dioxide (SiO₂)
mineral
Carnelian
Carnelian (a variety of Chalcedony, which is a microcrystalline quartz, SiO₂)
Mineral
Yellow Jasper
Tectosilicates (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Red Jasper
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
sedimentary
Carnelian
Carnelian (a variety of Chalcedony, SiO₂)
Mineral
Leopard Skin Jasper
Chalcedony (cryptocrystalline Quartz)
Mineral
Blue Lace Agate
Silicon dioxide (SiO2) - Chalcedony variety
mineral
Dalmatian Jasper
Feldspar-Quartz Microgranite
igneous
Tumbled brown agate (chalcedony)
Microcrystalline quartz, SiO₂; likely iron-stained chalcedony, though the photo alone cannot confirm agate banding
mineral
Red Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2)
sedimentary
Blue Lace Agate (often dyed)
Silicon dioxide (SiO2) - variety of chalcedony
mineral
Banded Agate
Chalcedony (SiO2 with impurities)
mineral
Orange chalcedony (agate) in host rock
Microcrystalline quartz, SiO₂; likely iron-stained chalcedony
mineral
Black Veined Jasper (Spiderweb Jasper)
Silicon Dioxide (SiO2)
sedimentary
Blue Lace Agate
Chalcedony (SiO2)
mineral
Tumbled brown stone, likely jasper
Likely microcrystalline quartz (SiO₂), possibly iron-stained jasper; exact identification is uncertain from the photo
mineral
Red Jasper
Jasper (a variety of Chalcedony, SiO₂ with impurities)
Mineral
Weathered agate or chalcedony nodule
Microcrystalline quartz (SiO₂), likely chalcedony/agate
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Yellow Jasper
Silicon dioxide (SiO2)
mineral