Man Made Object (Simulant)

Green Glass Slag

Amorphous Silicon Dioxide (SiO2) with metal oxide impurities

Porcelain (Stoneware Ceramic)

Mullite / Silica-glass composite (Al6Si2O13)

Glass Nugget (Tumbled Glass)

Amorphous Silicon Dioxide (SiO2) with additives

Goldstone (Brown)

Aventurine glass

Diamond

Carbon (C)

Diamond

Carbon (C)

Diamond

Carbon (C)

Rough Corundum (Sapphire/Ruby mixture)

Corundum (Aluminum Oxide, Al2O3)

Diamond (Colorless/White)

Carbon (C)

Chalk

Calcium Carbonate (CaCO3)

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2

Lepidolite Polished Point

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Diamond

Carbon (C)

Aura Quartz / Rainbow Aura Quartz

Silicon Dioxide (SiO2) with metallic vapor coating

Diamond

Carbon (C)

Corundum (Pink Sapphire / Ruby)

Al2O3 (Aluminum Oxide)

Diamond (in a jewelry setting)

Carbon (C)

Amber (Copal)

Organic gemstone, fossilized tree resin (often immature amber or copal)

Brecciated jasper (likely red-and-cream jasper)

Jasper, an opaque microcrystalline variety of quartz; primarily cryptocrystalline SiO₂ with iron-oxide staining and possible chalcedony/quartz veining

Tumbled sodalite with white calcite veining

Sodalite, Na8(Al6Si6O24)Cl2, commonly intergrown with calcite, CaCO3

Diamond (or high-quality simulant like Cubic Zirconia)

Carbon (C) - Native Element

Polished serpentine or green jasper pebble

Likely serpentine-group silicate, chiefly antigorite/lizardite; possibly iron-rich jasper

Beach Pebble (likely Quartz or Chalcedony)

Silicon Dioxide (SiO2)

Dyed Pink Quartzite (Jadeite Simulant)

Silicon Dioxide (SiO2) with organic dye

Diamond

Native Carbon (C)

Blue Chalcedony Cube

Silicon Dioxide (SiO2)

Fossil Shark Tooth

Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna

Corundum (Ruby variety)

Aluminium oxide (Al2O3)

Diamond (as set in a gold ring)

Carbon (C)

Turquoise

Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O

Diamond

C (Native Carbon)

Diamond

Carbon (C)

Rough Diamond

Native Carbon (C)

Diamond (in a cluster setting)

Crystallized Carbon (C)

Banded Agate

SiO2 (Silicon Dioxide)

Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)

Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)

Corundum (Sapphire/Ruby in Matrix)

Corundum (Al2O3)

Diamond Druzy (Crystalline Diamond)

Carbon (C)

Diamond

Diamond (pure native carbon, C)

Black Obsidian

Obsidian (Volcanic Glass, SiO2 + impurities)

Granite (weathered pebble)

Granite (plutonic igneous rock)

Lapis Lazuli

Lapis Lazuli (a rock type, not a single mineral, composed primarily of lazurite, calcite, and pyrite)