Synthetic (Man Made Material Mimicking Natural Stone)

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Tumbled amethyst

Quartz, crystalline silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation

Diamond

Carbon (C)

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Slag Glass (Cullet)

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

Brick

Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)

Titanium Aura Quartz (Bismuth-coated Druzy)

Silicon Dioxide (SiO2) with Titanium/Metal vapor coating

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Titanium Coated Kyanite (Aura Kyanite)

Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating

Blue Goldstone

Goldstone (artificial glass)

Goldstone (aventurine glass)

Man-made copper-bearing glass; not a natural mineral (commonly sold as blue/brown goldstone)

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Blue goldstone beads

Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli

Dyed Crackle Quartz (Green)

Quenching-treated Quartz (Silicon Dioxide, SiO2)

Diamond (or Cut Gemstone / Cubic Zirconia)

Carbon (C)

Conglomerate

Conglomerate (Sedimentary rock containing rounded clasts)

Cubic Zirconia (Faceted)

Zirconium dioxide (ZrO2)

Aqua Aura Quartz

Silicon Dioxide (SiO2) bonded with Gold (Au)

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

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).

Green glass sphere/marble

Soda-lime glass (primarily SiO2, Na2O, CaO)

Sea Glass

Man-made silicate glass

Slag

Metallurgical Slag

White quartz pebble

Quartz (SiO₂), likely milky quartz

Asphalt Concrete (Bituminous Concrete)

Bituminous aggregate

Diamond (or Diamond Simulant)

C (Carbon) or synthetic equivalent

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial pigment

Tumbled turquoise-like stone

Likely turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Diamond

Native Carbon (C)

Crescent Pebble

Weathered Quartzite or Sandstone Fragment

Glass

Amorphous Silicon Dioxide (SiO2)

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite/Goethite inclusions

Dyed Blue Agate (Dragon Vein Agate)

Silicon Dioxide (SiO2) with artificial cobalt/organic dyes

Blue Goldstone

Man-made glass with suspended copper, cobalt, or manganese particles

Blue Goldstone

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

Crushed Stone (Likely Limestone or Granite)

Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite

Pink Tumbled Quartz (Dyed)

Silicon Dioxide (SiO2)

Likely citrine or yellow glass imitation in a silver-tone bracelet

Citrine: quartz, SiO₂; exact material cannot be confirmed visually

Blue glass-like gemstone specimen (likely dyed or synthetic quartz)

Uncertain; possibly blue-dyed quartz or synthetic glass, not confidently identifiable from the image

Man-made Jewelry (Metal and Glass/Plastic)

Synthetic Alloy and Amorphous Solid (SiO2/Polymer)

Polished blue-black cabochon, likely blue obsidian or dyed glass-like stone

Indeterminate from image; possible natural obsidian (volcanic glass), commonly SiO₂-rich rhyolitic glass