Dalmatian Stone (commonly called Dalmatian Jasper)
Peralkaline Rock (mixed Feldspar, Quartz, and Arfvedsonite)
igneous
Category
Sedimentary (Microcrystalline Quartz)
Browse sedimentary (microcrystalline quartz) specimens identified by the Rock Identifier community.
Black Jasper (Black Onyx substitute)
Silicon Dioxide (SiO2) with carbonaceous impurities
sedimentary (microcrystalline quartz)
Yellow Jasper
Chalcedony (Silicon Dioxide, SiO2)
sedimentary (microcrystalline quartz)
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary (microcrystalline quartz)
Jasper River Pebble
Silicon Dioxide (SiO2)
sedimentary (microcrystalline quartz)
Red Jasper
Jasper (SiO2) with Hematite (Fe2O3) inclusions
sedimentary (microcrystalline quartz)
Red Jasper (River Pebble)
Silicon Dioxide (SiO2) with hematite impurities
sedimentary (microcrystalline quartz)
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Chert (Agatized/Chalcedony variety)
Microcrystalline Quartz (SiO2)
sedimentary
Pebble (likely Quartz or Chert)
SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.
Sedimentary Rock
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Quartz Vein in Pelite (Metamorphic Rock)
Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)
metamorphic
Geode (Unopened)
Siliceous Geode (SiO2)
sedimentary
Chert Breccia
Brecciated Chert (Microcrystalline Silica)
sedimentary
Chert (Tan/Yellow variety)
Microcrystalline quartz (SiO2)
sedimentary
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 Chalcedony
Silicon Dioxide (SiO2)
mineral
Gray Chert (River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Red Jasper with Quartz Veining
Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions
sedimentary
Chert Geode with Quartz Druzy
Microcrystalline Quartz (SiO2) with macrocrystalline Quartz
sedimentary
Grey Chalcedony (Tumbled Moon)
Microcrystalline Quartz (SiO2)
mineral
Chert (Jasper/Flint variant)
Microcrystalline Quartz (SiO2)
sedimentary
Agate with Druzy Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Chalcedony
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Red Chert/Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2)
sedimentary
Chert Nodule (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chalcedony with Druzy Quartz Geode
Silicon Dioxide (SiO2)
mineral
Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (and Jasper/Chalcedony mixture)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (potentially Flint or Mudstone)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Yellow Jasper/River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper or Chalcedony
Microcrystalline Quartz (SiO2)
sedimentary