Sedimentary (Processed Mineral Product)

Green Moss Agate

Silicon Dioxide with inclusions (SiO2 + Mn/Fe)

Hematite (Botryoidal/Kidney Ore)

Iron(III) oxide (Fe2O3)

Blue Calcite

Calcium Carbonate (CaCO3)

Pyrite

Iron Sulfide (FeS2)

Chert (Beach Pebble)

Microcrystalline Quartz (SiO2)

Garnet-Mica Schist

Garnetiferous Porphyroblastic Schist

Quartz River Cobble

Silicon Dioxide (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily Quartz with Fe2O3 staining)

Dream Amethyst (Chevron Amethyst)

Silicon Dioxide (SiO2) with iron impurities and gamma radiation exposure

Jasper

Silicon Dioxide (SiO2) with impurities

Milky Quartz (Druzy Geode fragment)

Silicon Dioxide (SiO2)

N/A - Man-made object (Jewelry Chain)

Antiqued or Oxidized Metal Chain (often Steel or Brass)

Petrified Wood

Silicified Wood (SiO2 permineralization)

Iron Gossan (Limonite/Goethite)

Hydrated Iron Oxides (FeO(OH)·nH2O) from oxidation zones

Petrified Wood

Silicified wood (Quartz variant, SiO2)

Jasper

Jasper (Silicon Dioxide, SiO2)

Chert (Septarian or Nodular variety)

Microcrystalline Quartz (SiO2)

Mixed Quartz and Jasper Pebbles

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite (with iron oxide cement)

Gold

Native Gold (Au)

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Aura Quartz Geodes (Lab-Altered)

Silicon Dioxide (SiO2) with Metallic Vapor Deposition

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Fired Clay Brick (Anthropic Rock substitute)

Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)

Jasper (Iron-stained)

Silicon Dioxide (SiO2) with iron oxide inclusions

Dyed Chalcedony (Agate)

Silicon Dioxide (SiO2) with artificial pigment

Quartz Pebble (Geode-like)

Silicon Dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Botryoidal Black Chalcedony Geode (Black Grape Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Sandstone (Ferruginous)

Sandstone (SiO2 with iron oxide inclusions)

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Orange Calcite

Calcium Carbonate (CaCO3)

Hematite

Iron(III) oxide (Fe2O3)

Chert (often called Flint)

Chert (Microcrystalline Silicon Dioxide, SiO2)

Brecciated Jasper

Silicon Dioxide (SiO2) with Hematite and Quartz inclusions

Green Aventurine

Silicon Dioxide (Quartz) with inclusions of Fuchsite mica (K(Al,Cr)2(AlSi3O10)(OH)2)

Red Jasper

Jasper (Silicon Dioxide based crypto-crystalline Quartz with Iron inclusions)

Calcite

Calcite (CaCO3)

Fossiliferous Rock (likely Dinosaur Fossil in Matrix)

Permineralized Vertebrate Fossil (Calcium Carbonate/Silica replaced bone material)