Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Category
Browse organic gemstone (succinite) specimens identified by the Rock Identifier community.
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Quartz and Limestone Grouping
Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)
Chert (Yellow Jasper/Flint)
Silicon Dioxide (SiO2)
Chert (variations include Flint or Jasper)
Silicon Dioxide (SiO2)
Chert (Green variety)
Silicon Dioxide (SiO2)
Chert (var. Jasper)
Microcrystalline Quartz (SiO2)
Tumbled amber-like inclusion
Likely amber (fossilized tree resin; complex polymer), but identification is uncertain from the image
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
Chert (Jasper/Chalcedony)
Microcrystalline Quartz (SiO2)
Pearl and Garnet Glass
Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Red Jasper
Jasper (Silicon Dioxide with Iron inclusions - SiO2)
Amber (or polished Chalcedony bead)
Fossilized Tree Resin / SiO2 (Silicon Dioxide if Chalcedony)
Chert (variations like Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Amber with dark mineral/organic inclusions
Fossilized plant resin (amber; chiefly polymerized diterpenoid resin)
Petrified Wood
Silicified wood (principally SiO2)
Chert (Nodule)
Chert (composition: SiO2)
Chert (with Lichen)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Amber (Copal)
Organic gemstone, fossilized tree resin (often immature amber or copal)
Chert (Cherty Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert / Flint
Chert (SiO2)
Chert (and its variety Flint)
Silicon dioxide (SiO2) / Microcrystalline quartz
Yellow Chert (Chert / Cryptocrystalline Quartz)
Silicon Dioxide (SiO2)
Chert (Flint Pebbles)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Green Chert (Jasper)
Silicon Dioxide (SiO2)
Chert
Chert (Microcrystalline Quartz, SiO2)
Moss Agate and Hematite
Silica (SiO2) with fibrous inclusions of Manganese or Iron; Hematite (Fe2O3)
Pearl
Organic Mineral (CaCO3 with conchiolin)
Green Chert
Microcrystalline Quartz (SiO2)
Chert (Flint)
Cryptocrystalline quartz (SiO2)
Petrified Wood
Silicified Wood (primarily SiO2)
Pearl (Biogenic Mineral)
Calcium Carbonate (primarily Aragonite) with Conchiolin; CaCO3
Chert / Flint
Cryptocrystalline Quartz (SiO2)
Chert / Chalcedony
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Light Grey / Flint variant)
Cryptocrystalline Quartz (SiO2)
Chert (specifically Flint or Common Chert)
Silicon Dioxide (SiO2)
Jasper
Jasper (Silica-rich microcrystalline Quartz, SiO2 with Fe2O3 impurities)
Jasper
Silicon dioxide (SiO2) with impurities