Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Category
Browse organic gem material (botanical) specimens identified by the Rock Identifier community.
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Light Grey / Flint variant)
Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Silicon Dioxide (SiO2)
Chert (often called Jasper in this color variety)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert
Chert (Microcrystalline Quartz, SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (with Quartz veins)
Microcrystalline Quartz (SiO2)
Chert (Yellow/Brown variety)
Chert (SiO2)
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Petrified Wood
Silicified Wood (SiO2)
Chert (Arrowhead/Tool variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (often called Flint or Jasper depending on color)
Chert (SiO2 - Microcrystalline or Cryptocrystalline Quartz)
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Yellow/Brown Jasper)
Silicon Dioxide (SiO2)
Chert (specifically Gray/Tan Chert Node)
Microcrystalline Quartz (SiO2)
Black Jasper (Black Stone / River Pebble)
Silicon Dioxide (SiO₂), Opaque variety of Chalcedony
Chert (Yellow/Tan Variety)
Chert (SiO2)
Chert (often called Flint or Jasper)
Silicon Dioxide (SiO2)
Fossilized Wood (with Coal and Limonite)
Petrified Wood (Silicified or Carbonized Flora)
Petrified Wood
Silicified Wood (primarily SiO2)
Petrified Wood (Agatized/Silicified Wood)
Silicified Wood / Chalcedony (SiO2)
Jasper
Jasper (Silica-rich microcrystalline Quartz, SiO2 with Fe2O3 impurities)
Chert (Chalcedony)
Silicon Dioxide (SiO2)
Titanium Aura Quartz
Titanium bonded Silicon Dioxide (SiO2 + Ti)
Jasper with Quartz Vein
Silicon Dioxide (SiO2) with impurities
Jasper
Jasper (Silicon Dioxide, SiO2)
Chert (Jasper-rich)
Microcrystalline/Cryptocrystalline Quartz (SiO2)
Chert (varietal Flint or Jasper)
Microcrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (SiO2 permineralization)
Chert / Flint
Cryptocrystalline Quartz (Silicon Dioxide, SiO2)
Chert (and Flint)
Silicon dioxide (SiO2) - Microcrystalline or Cryptocrystalline Quartz
Yellow Chert (Jasper)
Microcrystalline Quartz (SiO2)
Chert (varieties: Flint or Chalcedony)
Microcrystalline Quartz (SiO2)
Chert (often called Flint when dark)
Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)
Chert (specifically Black Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Chert / Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)