Man Made Object (Simulant)

Diamond (in jewelry)

Carbon (C)

Lepidolite Polished Point

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

Titanium Aura Quartz (Aura Quartz)

Titanium-coated Silicon Dioxide (SiO2)

Cardstock (Paper)

Cellulose (C6H10O5)n

Blue Slag Glass

Amorphous Silica (Byproduct of smelting)

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

Synthetic Resin (Artificial Specimen)

Polyurethane or Polyester Resin

Slag Glass (Cullet)

Amorphous Silicon Dioxide (SiO2) with metal oxide colorants

Slag (Anthropogenic Glass/Iron byproduct)

Ferro-silicate Slag

Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)

Silicon Dioxide (SiO2) with metallic inclusions

United States Quarter Dollar

Cupronickel Clad Alloy (75% Copper, 25% Nickel over a 100% Copper core)

Beach Pebble (likely Quartz or Chalcedony)

Silicon Dioxide (SiO2)

Granite (weathered pebble)

Granite (plutonic igneous rock)

Blue Goldstone

Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)

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

Moissanite

Silicon Carbide (SiC)

Diamond

Carbon (C)

Rough Corundum (Sapphire/Ruby mixture)

Corundum (Aluminum Oxide, Al2O3)

Diamond (Colorless/White)

Carbon (C)

Rose Quartz (likely carved)

Rose Quartz (SiO2)

Lapis Lazuli

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

Chalk

Micrite (primarily Calcium Carbonate, CaCO3)

Diamond (in a jewelry setting)

Carbon (C)

White Jade (Nephrite)

Nephrite, Ca2(Mg,Fe)5Si8O22(OH)2

Rose Quartz Carving

Quartum roseum (Variety of Quartz, SiO2)

Chalcedony (or a variety of Chalcedony, likely Agate or Jasper)

Chalcedony (SiO₂)

Diamond (or high-quality simulant like Cubic Zirconia)

Carbon (C) - Native Element

Agate (specifically, multi-colored or pastel-dyed agate)

Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).

Diamond

Native Carbon (C)

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

Fossiliferous Limestone

Limestone (composed primarily of calcite with included fossils CaCO3)

Green Aura Quartz

Silicon Dioxide (SiO2) bonded with metallic vapors (typically Gold, Chromium, or Titanium)

Rough Diamond

Native Carbon (C)

Diamond (in a cluster setting)

Crystallized Carbon (C)

Diamond Druzy (Crystalline Diamond)

Carbon (C)

Corundum (Sapphire/Ruby in Matrix)

Corundum (Al2O3)

Diamond

Diamond (pure native carbon, C)

Dyed Pink Quartzite (Jadeite Simulant)

Silicon Dioxide (SiO2) with organic dye