Man Made Glass

Pyrite Concretion (Grapestone)

Iron Sulfide (FeS2) Concretion

Opalite

Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)

Aura Quartz (Titanium/Gold coated)

Silicon Dioxide (SiO2) with metallic vapor deposition

Cubic Zirconia (Simulated Diamond)

Cubic Zirconia (ZrO2)

Metal Alloy (Likely Pewter or Sterling Silver)

Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).

Conglomerate

Conglomerate Rock (Paraconglomerate)

Sandstone Concretion

Clastic sedimentary rock (primarily Quartz SiO2)

Brick fragment (Man-made material)

N/A (Fired clay)

Titanium Amethyst Geode

Silicon Dioxide (SiO2) with Titanium/Metal Vapor Deposition Layer

Aura Quartz

Titanium/Titanium-Gold treated Silicon Dioxide (SiO2)

Man-made earbud charging case (Not a rock or mineral)

Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components

Blue Crackle Quartz (Dyed Quarzite)

Silicon Dioxide (SiO2) with artificial dye

Dyed Blue Agate (Dragon Vein Agate)

Silicon Dioxide (SiO2) with artificial cobalt/organic dyes

Diamond

Native Carbon (C)

Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating

Slag Glass (Cullet)

Amorphous Silica (man-made), primarily SiO2 with trace metal oxides

Hematite

Iron(III) oxide (Fe2O3)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC) / Moissanite (natural form)

Goldstone

N/A (Synthetic Glass with Copper Inclusions)

Porcelain Tile (Sandstone-look)

Man-made Ceramic (resembling Quartz-rich Sandstone)

Ferruginous Conglomerate (or Iron-Rich Concrete/Slag)

Clastic Sedimentary (Silicon Dioxide/Iron Oxide matrix)

Pet Rock (Man-made Quartzite or Granite Cobble)

Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica

Terrazzo (with Marble and Granite fragments)

Cementitious or resinous composite containing Calcium Carbonate (CaCO3) and Silicates

Sandstone (with man-made markings)

Arenite (composed primarily of Quartz, SiO2)

Dyed Crackle Quartz

Silicon Dioxide (SiO2) with synthetic dye

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial pigment

Green Agate

Silicon dioxide (SiO₂)

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Note: This is a Man-Made Object (Costume/Prop Patch)

Synthetic fiber and pigments (Cellulose/Plastic-based composite)

Man-made Synthetic Material (Plastic/Composite)

Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)

Goldstone (Brown)

Aventurine glass

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Slag Glass (Cullet)

Amorphous Silicon Dioxide (SiO2) with metal oxide colorants

Hematite Beads

Hematite (Fe2O3)

Glass Nugget (Tumbled Glass)

Amorphous Silicon Dioxide (SiO2) with additives

Man-made Carved Stone (Scream Mask/Skull motif)

Carved Soapstone or Serpentine-rich rock

Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)

Silicon Dioxide (SiO2) with metallic inclusions

Slag (Anthropogenic Glass/Iron byproduct)

Ferro-silicate Slag

Blue Slag Glass

Amorphous Silica (Byproduct of smelting)

Man-made Slag (Industrial Byproduct)

Anthropogenic Glassy Residue

Man-made Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating/dye

Green Glass Slag

Amorphous Silicon Dioxide (SiO2) with metal oxide impurities