Synthetic Glass (Man Made)

Pink corundum (likely synthetic or treated sapphire)

Corundum, Al₂O₃; pink coloration commonly from chromium or treatment

Ruby / Red Tourmaline

Corundum (Al2O3) or Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)

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

Antiqued or Oxidized Metal Chain (often Steel or Brass)

Faceted colorless gemstone, likely glass or diamond imitation

Unidentified; possibly diamond (carbon, C) or cubic zirconia (zirconium dioxide, ZrO₂)

Faceted citrine-colored gemstone (likely synthetic/display stone)

Quartz, SiO₂, if natural citrine; possibly synthetic sapphire or glass imitation

Glass Nugget (Tumbled Glass)

Amorphous Silicon Dioxide (SiO2) with additives

Faceted gemstones, likely assorted quartz or glass-like gems

Not determinable from the photograph; possible quartz (SiO₂), topaz, or synthetic cubic zirconia

Faceted colorless gemstone, likely quartz (rock crystal)

Quartz, SiO₂

Green glass-like cabochon, likely synthetic glass or resin

Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin

Blue glass-like gemstone, likely synthetic spinel or glass

Uncertain; possibilities include synthetic cobalt-blue spinel (MgAl₂O₄) or cobalt-colored glass

Man-made Metal Pin (Non-geological)

Antimony-Lead Alloy or Zinc/Brass Base with Electroplating

Pink-red faceted gemstone, possibly synthetic corundum or spinel

Uncertain; possible ruby (corundum, Al₂O₃) or red spinel (MgAl₂O₄)

Cubic Zirconia

Zirconium dioxide (ZrO2)

Asphalt (Bituminous Concrete)

Bituminous Concrete / Pavement

Tumbled amethyst

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

Synthetic Sapphire and Ion-X Glass

Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass

Clear faceted gemstone in an ornate metal bracelet

Unidentified transparent faceted stone; possibilities include quartz (SiO₂), zircon (ZrSiO₄), or glass—image alone cannot distinguish them

Colorless faceted gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); exact identification cannot be confirmed from the photograph

Strawberry Quartz (or Sunstone / Tumbled Quartz)

Silicon Dioxide (SiO2) with Hematite/Lepidocrocite inclusions

Ruby (in costume jewelry context)

Corundum (Al2O3) with Chromium impurities

Sea glass (likely pale blue glass)

Human-made silicate glass, likely soda-lime glass; not a natural mineral or rock

Blue gemstone ring, likely sapphire

Corundum, Al₂O₃ (probable blue sapphire); surrounding stones may be diamonds or simulants

Likely weathered pebble or mineral fragment

Indeterminate; possibly quartz-rich stone, iron-stained feldspar, or a small chert fragment

Green sea glass (likely)

Anthropogenic glass, not a mineral; composition commonly soda–lime silicate glass

Pink/red faceted gemstone, likely synthetic corundum or glass imitation

Corundum (Al₂O₃), ruby/sapphire variety; exact identification requires testing

Faceted colorless gemstone, likely quartz or glass imitation

Most plausibly rock crystal (quartz, SiO₂); identity is uncertain because the photograph shows only intense facet reflections

Green faceted gemstone, likely emerald or synthetic emerald

Beryl, Be₃Al₂Si₆O₁₈, colored green by chromium and/or vanadium; identity cannot be confirmed visually

Purple cabochon gemstone, likely amethyst or purple sapphire/spinel

Indeterminate from image; possible quartz (SiO₂), corundum (Al₂O₃), or spinel (MgAl₂O₄)

Blue cabochon ring stone, likely sapphire or synthetic blue corundum

Corundum (Al₂O₃), possibly chromium/iron-titanium-bearing sapphire

Sea Glass

Amorphous Silicon Dioxide (SiO2)

Decorative opal-like turtle mosaic

Likely imitation or assembled opal material; exact stones cannot be confirmed visually

Likely blue sapphire ring

Corundum (Al₂O₃), likely sapphire; surrounding stones may be diamonds or colored gems

Iridescent polished gemstone, likely opal

Common or precious opal (hydrated amorphous silica, SiO₂·nH₂O), possibly synthetic or glass imitation

Faceted transparent gemstone, likely glass or cubic zirconia

Uncertain from image; possible cubic zirconia (zirconium dioxide, ZrO₂) or glass imitation

Cubic Zirconia (simulant) or Diamond

ZrO2 (Cubic Zirconia) or C (Diamond)

Smoky Quartz

Silicon Dioxide (SiO2)

Brick

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

Red faceted gemstone, possibly ruby

Corundum (Al₂O₃), if ruby; image alone cannot confirm identity or natural origin

Blue Sapphire (likely lab-grown or treated)

Corundum (Aluminum Oxide, Al2O3)

Amethyst cabochon ring

Amethyst, purple quartz (SiO₂)

Colorless faceted gemstone, likely quartz

Quartz (SiO₂), probably rock crystal; exact identification is uncertain from the strongly backlit image

Spinel

Magnesium Aluminum Oxide (MgAl2O4)