Organic (If Resin) Or Synthetic (If Glass); Simulating Sedimentary Or Metamorphic (For Natural Stones)

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Red Chert (Jasper)

Chert / Microcrystalline Quartz (SiO2)

Pink Sapphire

Corundum (Al2O3) with Chromium/Iron/Titanium trace impurities

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

Citrine (likely Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Banded Agate (specifically Eye Agate / Chalcedony)

Agate (Cryptocrystalline variety of Quartz, SiO2)

Petrified Wood

Silicified Wood (primarily Quartz/Chalcedony, formula: SiO2)

Blue Sapphire

Corundum (Al2O3 - Aluminum Oxide)

Shiva Lingam

Cryptocrystalline Quartz (Jasperiod Silicate with Iron Oxide inclusions)

Serpentine Schist with Quartz Vein

Serpentine Schist (a type of Metamorphic rock). The white band is likely Quartz (SiO2).

River Stone (likely Basalt or Chert)

Silicon Dioxide (SiO2) for chert or Mafic Extrusive Rock for basalt

Graphite

Graphite (Native Carbon, C)

Ferruginous Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions (Limonite/Goethite)

Septarian Nodule (Thunder Egg)

Septarian Concretion (CaCO3 + CaMg(CO3)2 + SiO2)

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Blue Agate (Dyed Chalcedony)

Silicon Dioxide (SiO2)

Grey Chalcedony

Silicon Dioxide (SiO2)

White Topaz

Al2SiO4(F,OH)2

Yellow Calcite

Calcium Carbonate (CaCO3)

Citrine

Silicon Dioxide (SiO2) with iron impurities

Rough Green Sapphire (Corundum)

Corundum (Al2O3 - Aluminum Oxide with trace elements)

Smoky Quartz

Silicon Dioxide (SiO2)

Pumice

Pumice (a highly vesicular extrusive igneous rock)

Stromatolite (Jasper-replaced)

Fossilized Stromatolite (Cyanobacteria / Cryptozon / Silica SiO2)

Smoky Quartz

Silicon Dioxide (SiO₂)

Chert (Yellow Jasper variant)

Silicon Dioxide (SiO2)

Yellow Jasper (Chert)

Silicon Dioxide (SiO2) with iron inclusions

Chert (Jasper variety)

Cryptocrystalline Quartz (SiO2)

Rough Sapphire (Corundum)

Corundum (Al2O3)

Blue Lace Agate (Heat-treated/Crackle Quartz variety)

Silicon Dioxide (SiO2)

Diorite (possibly fine-grained variety or a related intermediate intrusive rock like a felsic gabbro or a dark granodiorite)

Diorite (Igneous rock, intrusive, intermediate composition)

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Quartz (Milky Quartz/Citrine Type)

Silicon Dioxide (SiO2)

Granite

Granite (Felsic Plutonic Rock)

Citrine

Silicon Dioxide (SiO2) with ferric iron impurities

Glauconitic Sandstone (Greensand)

Glauconitic Quartz Arenite (containing Glauconite, (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2)

Chert (Nodule)

Silicon Dioxide (SiO2)

Orthoceras Fossil Limestone

Orthoceras sp. (Calcium Carbonate, CaCO3)

Chert (often called Jasper in this color)

Microcrystalline quartz (SiO2)

Green Jasper

Silicon Dioxide (SiO2) with impurities

Smoky Quartz

Quartz (Silicon Dioxide) - SiO2

Citrine

Silicon Dioxide (SiO2)