Sedimentary Or Metamorphic (Base Substrate)

Ruby in Fuchsite

Corundum (Al2O3) in Fuchsite (K(Al,Cr)3Si3O10(OH)2)

Biotite (Black Mica)

Biotite - K(Mg,Fe)3(AlSi3O10)(F,OH)2

Greenstone (Greenschist)

Greenschist facies rock (containing chlorite, epidote, actinolite)

Kaolinite (China Clay)

Kaolinite (Al2Si2O5(OH)4)

Citrine

Silicon Dioxide (SiO2) with iron impurities

Chert

Microcrystalline silica (SiO2)

Citrine Quartz

Silicon Dioxide (SiO2)

Sandstone (with banding)

Arenite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Imperial Topaz

Al2SiO4(F,OH)2

Smooth gray river pebble

Likely fine-grained sandstone or siltstone; exact identification requires a fresh surface and tests

Magnetite Ore

Magnetite (Fe3O4)

Sandstone

Arenite (primarily SiO2)

Limestone

CaCO3 (Mainly Calcite or Aragonite)

Gneiss

Metamorphic Gneiss

Common Brown Pebble

Weathered Rock Fragment

Chert Arrowhead (Projectile Point)

Microcrystalline Quartz (Chert/Flint)

Sandstone (with Iron Staining)

Arenite (SiO2 with Fe2O3/FeOOH impurities)

Sandstone Cobble

Arenite (Sandstone)

Chert (Iron-stained)

Silicon Dioxide (SiO2)

Dalmatian Jasper

Peralkaline Quartz Feldspar Porphyry

Ferruginous Sandstone (Ironstone)

Sedimentary rock with Limonite/Goethite cement

Synthetic Wolf Plush (Non-mineral)

Canis lupus similis (Prop material: Polyester & Synthetic fibers)

Coquina

Biogenic Limestone (Calcite/Aragonite base, CaCO3)

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate

Conglomerate (a clastic sedimentary rock)

Heliotrope (Bloodstone)

Cryptocrystalline Quartz (SiO2) with inclusions of Hematite (Fe2O3)

Orbicular Jasper (Ocean Jasper variant)

Silicon Dioxide (SiO2) with iron oxide inclusions

Anthracite Coal

Anthracite (Carbon C)

Polygenetic Conglomerate (Puddingstone)

Conglomerate (SiO2 matrix with mixed clasts)

Pyrite Concretion (Grapestone)

Iron Sulfide (FeS2) Concretion

Jade (likely Nephrite Jade based on appearance)

Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)

Sandstone

Arenite (SiO2 based with various cements)

Sandstone (Quartz-rich)

Arenite (SiO2 based clastic rock)

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Greywacke)

Arenite/Greywacke (SiO2 major)

Sandstone (Ferruginous)

Arenite (Fe-oxide enriched)

Sandstone (Greywacke/Siltstone variant)

Clastic Sedimentary Rock (composed primarily of Quartz SiO2 and Feldspar)

Puddingstone (Quartzite Pebble)

Metaconglomerate / Jasper-Quartzite Pebble

Chert (Iron-stained)

Chert (Cryptocrystalline Silica, SiO2)

Siltstone

Siltstone (primarily SiO2 with Al2O3)

Blue Moss Agate

Silicon Dioxide (SiO2) with mineral inclusions