Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides (Goethite)
sedimentary
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.
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Orange-pink chalcedony (likely carnelian/chalcedony rough)
Microcrystalline quartz, SiO₂; iron-oxide-bearing chalcedony
mineral
Banded Agate (specifically Lake Superior Agate type)
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Chalcedony
Chalcedony (SiO2)
mineral
Jasper
Chalcedony (SiO2)
mineral
Chert (specifically Flint or Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Red jasper (likely tumbled jasper/chert)
Microcrystalline quartz, SiO₂, colored red by iron oxides; exact identification from the photo is uncertain.
sedimentary
Polished red jasper beads
Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides
mineral
Tumbled orbicular jasper (probable)
Jasper, microcrystalline quartz (SiO₂), with iron- and clay-rich inclusions
mineral
Polished orbicular jasper (likely ocean jasper)
Jasper, a microcrystalline variety of quartz (SiO₂), with iron-oxide and other mineral inclusions
mineral
Tumbled jasper (likely brecciated or red jasper)
Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions
mineral
Ocean Jasper
Silicon Dioxide (SiO2) - Orbicular Jasper / Chalcedony
mineral
Brecciated jasper/chert
Microcrystalline quartz (SiO₂), with iron-oxide and clay inclusions
sedimentary
Polished orbicular jasper (likely ocean jasper)
Silica-rich microcrystalline quartz/chalcedony, SiO₂; precise variety uncertain from the photo
mineral
Flint
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert
Microcrystalline quartz (SiO2)
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Chert
Microcrystalline quartz (SiO2)
sedimentary
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Carnelian
Carnelian (SiO2) - Chalcedony variety
mineral
Chert
Microcrystalline quartz (SiO2)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace elements of Titanium, Iron, or Manganese
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Red Jasper (with Quartz)
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Agate
Chalcedony (Microcrystalline Quartz) - SiO2
Mineral
Tumbled chalcedony (likely agate or jasper)
Microcrystalline quartz, SiO₂ (chalcedony)
mineral
Jasper (Brown Iron-Rich Variety)
Silicon Dioxide (SiO2) with Fe2O3 (Iron Oxide/Crystalline Quartz)
sedimentary
Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
sedimentary
Polished orange jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored by iron oxides
mineral
Jasper
Silicon Dioxide (SiO2)
mineral
Tumbled agate or chalcedony
Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/agate
mineral
Tumbled chalcedony or quartz pebble
Microcrystalline quartz, SiO₂ (likely chalcedony; exact identification requires testing)
mineral
Polished yellow chalcedony (likely lemon agate or yellow jasper)
Microcrystalline quartz, SiO₂
mineral
Polished agate (likely chalcedony)
Microcrystalline quartz, SiO₂; agate is banded chalcedony
mineral
Chalcedony Geode Part (Agate/Quartz)
Silicon Dioxide (SiO2)
mineral
Dyed Purple Agate Sliced
Silicon Dioxide (SiO2) with artificial pigment
mineral
Tumbled yellow jasper or iron-stained chert
Microcrystalline quartz (SiO₂), likely colored by iron oxides
mineral
Pink Granite
Granite (Phaneritic Quartz-Feldspar intrusive rock)
igneous
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary