Sandstone
Arenite
Category
Browse organic (if resin) or synthetic (if glass); simulating sedimentary or metamorphic (for natural stones) specimens identified by the Rock Identifier community.
Sandstone
Arenite
Chert (often called Flint)
Microcrystalline to cryptocrystalline quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (likely Jasper or Chert variety)
Quartz (SiO₂)
Chert (Jasper/Chalcedony)
Microcrystalline Quartz (SiO2)
Chert (Siliceous Mudstone variant)
Microcrystalline quartz (SiO2)
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Quartz Variety)
Chert (SiO2)
Red Jasper (Brecchiated Jasper)
Silicon Dioxide (SiO2) with Hematite impurities
Chert (Field-collected Arrowhead-shaped Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Arrowhead Debitage or Spall)
Silicon Dioxide (SiO₂)
Quartz (specifically Milky Quartz/Quartzite)
Silicon Dioxide (SiO2)
Green Aventurine and Clear Quartz
Aventurine (variety of Quartz - SiO2) and Quartz (SiO2)
Jasper (Multi-colored) / Sea Glass Slag
Silicon Dioxide (SiO2) with impurities of Iron Oxide
Chert (varietal: Jasper or Ironstone nodule)
Microcrystalline Quartz (SiO2) with iron oxides
Chert (Nodule)
Chert (primarily Microcrystalline Quartz - SiO2)
Chert / Jasper
Microcrystalline Quartz (SiO2)
Sandstone
Arenite
Quartzite / Sandstone / Chert Mix
Silicon Dioxide (SiO2)
Chert (specifically Black Chert or Flint)
Cryptocrystalline Quartz (SiO2)
Chert (often called Flint)
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Chert Nodule)
Microcrystalline quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Green variety)
Silicon Dioxide (SiO2)
Chert (Black Chert/Flint)
Silicon Dioxide (SiO2)
Chert (White Chert / Flint)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Sandstone
Arenite
Chert (Flint)
Microcrystalline Quartz (SiO2)
Yellow Chert
Sedimentary cryptocrystalline quartz (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (often called Flint)
Microcrystalline Quartz (SiO2)
Chert (Quartz Variety)
Chert (SiO2)
Chert (Tan/Brown variety)
Chert (Microcrystalline Quartz, SiO2)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Smoky Quartz
Smoky Quartz (SiO ₂)