Organic Material (Likely A Fruit Or Berry)

Unknown Organic Object (likely a berry or fruit)

Not applicable; this is not a geological specimen. If it were a cranberry, its scientific name would be Vaccinium macrocarpon; if a cherry, it would be Prunus avium or Prunus cerasus.

Lemon (Mock specimen mimicking Citrine/Sulfur)

Citrus x limon

Conglomerate

Conglomerate (clastic sedimentary rock)

Ferruginous Conglomerate

Conglomerate with Iron-Oxide Matrix (SiO2 + Fe2O3/FeO(OH))

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate

Conglomerate (clastic sedimentary rock type)

Fossil Shark Tooth

Carcharodon sp. (likely Otodus or similar Lamniformes order)

Fossiliferous Chert (with Fossil Shells)

Silicon Dioxide (SiO2) with biogenic inclusions

Chert (Flint)

Microcrystalline Quartz (SiO2)

Coquina or Fossiliferous Limestone

Fossiliferous Calcarenite (CaCO3)

Petrified Wood

Silicified Wood (SiO2)

Chert (Fossiliferous)

Silicon dioxide (SiO2)

Conglomerate

Conglomerate rock

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Petrified Wood

Silicified wood (Quartz/Chalcedony/Opal replacing organic matter)

Agatized Fossil or Chalcedony Nodule

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Puddingstone (Conglomerate)

Conglomerate (clastic sedimentary rock)

Puddingstone

Conglomerate

Chert Arrowhead (Projectile Point)

Microcrystalline Quartz (SiO2)

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

Sandstone (with potential fossil inclusions)

Clastic sedimentary rock (primarily SiO2)

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chalcedony (Botryoidal or Tumbled)

Chalcedony (SiO₂)

Chert (specifically a weathered Chert nodule or fragment)

Chert; Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Ferruginous Sandstone (with possible trace fossils)

Arenite with Iron-Oxide Cement (SiO2 with Fe2O3)

Chert (and Petrified Wood)

Silicon Dioxide (SiO2)

Chert (specifically Jasper or Flint)

Cryptocrystalline Quartz (SiO2)

Sandstone with Algae Growth

Arenite with Chlorophyta/Lichen

Petrified Wood

Silicified Wood (SiO2)

Chert (often called Flint when dark or worked)

Cryptocrystalline silica (SiO2)

Chert (Jasper nodule)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Quartzite with inclusions

Quartzite

Chert (often called Flint or River Stone)

Microcrystalline Quartz (SiO2)

Chert (often called Flint or Agate nodule)

Cryptocrystalline Quartz (SiO2)

Chert (often called Flint or River Pebble)

Chert (Microcrystalline Quartz, SiO2)

Chert (Jasper/Limonitic Chert)

Microcrystalline Quartz (SiO2)

Sandstone (likely Fossilized Wood or Concrete Simulacrum)

Arenite / Silicified Wood / Anthropogenic Concrete

Megalodon Shark Tooth (Partial Fossil)

Otodus megalodon (fossilized in Calcium Phosphate/Apatite)

Chert (v. Flint)

Sedimentary Cryptocrystalline Quartz (SiO2)

Chert (Yellow Jasper/Flint)

Microcrystalline Quartz (SiO2)