Man Made Mineral Simulant (Glass)

Cubic Zirconia (as a jewelry specimen)

Zirconium dioxide (ZrO2)

Diamond engagement ring

Diamond, crystalline carbon (C)

Diamond (or Diamond Simulant like Cubic Zirconia)

Carbon (C) - if Diamond; Zirconium dioxide (ZrO2) - if Cubic Zirconia

Green gemstone ring, likely emerald simulant or jade

Uncertain; possible beryl (emerald, Be₃Al₂Si₆O₁₈) or jadeite (NaAlSi₂O₆), but the blurred image may show synthetic glass or another treated stone

Sea Glass

Anthropogenic Silicate Glass

Man-made Blank Ammunition (Brass)

CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)

Slag Glass (Cullet)

Amorphous Silicon Dioxide (SiO2) with metal oxide colorants

Colorless Gemstone (possibly Diamond or Cubic Zirconia)

C (Diamond) or ZrO2 (Cubic Zirconia)

Corundum (Pink Sapphire / Ruby)

Al2O3 (Aluminum Oxide)

Clear faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic zirconium dioxide, ZrO₂); visual identification is uncertain and diamond or another colorless stone is possible.

Cubic Zirconia (in Jewelry)

Zirconium Dioxide (ZrO2)

Red faceted gemstone, likely synthetic ruby or red glass imitation

Possibly synthetic corundum (Al₂O₃:Cr³⁺); image alone cannot distinguish it from glass or another imitation

Diamond (or Diamond Simulant)

Carbon (C) - Native Element

Cut gemstone ring, likely diamond

Diamond (carbon, C), faceted gemstone; exact stone identification is uncertain from the image

Terrazzo (with Marble and Granite fragments)

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

Polished green-and-black banded cabochon (likely malachite imitation or dyed agate)

Uncertain; possible malachite (Cu₂CO₃(OH)₂), banded agate (SiO₂), or man-made glass

Black Obsidian

Obsidian (Volcanic Glass, SiO2 + impurities)

Orange glassy slag (industrial by-product)

Iron-rich silicate glass; composition varies, commonly Fe–Ca–Al silicate

Diamond in a gold-tone setting

Diamond, crystalline carbon (C)

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

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

Man-made Green Quartz (Lab-grown or Treated)

Silicon Dioxide (SiO2) with artificial coloration

Sea Glass

Amorphous Silicon Dioxide (SiO2)

Blue glass-like heart pendant, likely synthetic blue spinel or colored glass

Unconfirmed; possibly synthetic spinel (MgAl₂O₄) or cobalt-colored glass

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

Faceted color-change gemstone, likely synthetic alexandrite or glass imitation

Alexandrite: chrysoberyl, BeAl₂O₄; exact identification requires gemological testing

Violet faceted gemstone, likely synthetic or simulant

Indeterminate from the image; possible violet sapphire (corundum, Al₂O₃), amethyst (quartz, SiO₂), or glass/another simulant

N/A - Man-made object (Jewelry Chain)

Antiqued or Oxidized Metal Chain (often Steel or Brass)

Blue tumbled glass or dyed stone (uncertain)

Unidentified; appearance is consistent with blue glass, but a blue mineral such as dyed quartz cannot be ruled out from the photo

Sea Glass

Amorphous silicon dioxide (glass)

Brick

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

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

Colorless faceted gemstone, likely a small diamond or imitation

Undetermined; diamond is carbon (C), but visual appearance alone cannot distinguish it from cubic zirconia or glass

Rough Diamond

Native Carbon (C)

Faceted clear gemstone (likely glass imitation or quartz)

Uncertain; appearance is consistent with colorless quartz (SiO₂), but the strong uniform brilliance may indicate cut glass or cubic zirconia

Tumbled quartz (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Likely smoky quartz cabochon ring

Quartz, silicon dioxide (SiO₂), brown variety colored by irradiation and trace aluminum

Clear faceted gemstone, likely cubic zirconia

Synthetic zirconium dioxide (ZrO₂), probably cubic zirconia; exact identification requires testing

Possible weathered basalt or slag fragment

Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image

Faceted diamond

Diamond; crystalline carbon (C)

Cubic Zirconia (CZ) Jewelry

Zirconium dioxide (ZrO2)

Red cabochon gemstone ring (likely glass or synthetic stone)

Undetermined; the image does not establish a natural mineral identity

Diamond (Set in jewelry)

Cubic Carbon (C)