Synthetic

Faceted Gemstone

Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass

Blue cabochon gemstone, likely synthetic spinel or glass

Undetermined; possible synthetic cobalt-blue spinel (MgAl₂O₄) or colored glass

Cubic Zirconia (as used in jewelry setting)

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

Pink faceted gemstone, likely synthetic ruby or pink sapphire

Corundum (Al₂O₃), possibly chromium-colored ruby; synthetic origin likely

The user-provided image does not contain a rock or mineral specimen

Cubic Zirconia

Zirconium dioxide (ZrO2)

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Ruby (in costume jewelry context)

Corundum (Al2O3) with Chromium impurities

Purple cabochon gemstone, likely amethyst or purple sapphire/spinel

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

Cubic Zirconia (simulant) or Diamond

ZrO2 (Cubic Zirconia) or C (Diamond)

Opalite

Synthetic glass / Opalized glass

Loose faceted colorless gemstones, likely quartz or glass-like mineral chips

Most consistent with quartz (SiO₂), though the photograph cannot exclude synthetic cubic zirconia or glass

Opalite (Synthetic Moonstone/Sea Opal)

Silicon Dioxide (SiO2) glass with metallic inclusions

Red gemstone ring, likely synthetic ruby or red spinel

Ruby: corundum (Al₂O₃); spinel: MgAl₂O₄; exact identity requires testing

Opalite

Synthetic Opalised Glass

Opalite

Synthetic Opalised Glass

Opalite

Synthetic opalescent glass

Asphalt / Road Aggregate

Bituminous Conglomerate (synthetic)

Opalite

Synthetic Opalized Glass

Ruby Lavender Quartz with Amethyst

Silicon dioxide with neodymium dopant (SiO2)

Rainbow Hematite / Magnetic Hematite

Iron oxide (Fe2O3) - often synthetic/coated for beads

Red glassy cabochon, likely synthetic ruby or red glass

Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass

Red gemstone, likely ruby

Corundum (Al₂O₃), colored red by chromium; identity cannot be confirmed from the photo

Star sapphire ring

Corundum (Al₂O₃), likely asteriated sapphire

Diamond (or Cubic Zirconia)

Cubic Carbon (C) or Zirconium Dioxide (ZrO2)

Cut purple gemstone, likely synthetic cubic zirconia or glass

Undetermined; possible cubic zirconia (ZrO₂)

Ruby (set in a ring; possibly synthetic or imitation)

Corundum, Al₂O₃; red color is typically caused by chromium

Faceted red gemstone, likely ruby

Corundum (Al₂O₃), red variety colored mainly by chromium

Diamond-set gold ring

Diamond (carbon, C) in a gold-alloy setting; the stone may be a diamond or a diamond simulant

Opalite

Synthetic Opalized Glass

Opalite

Synthetic Opalite Glass

Opalite

Synthetic Opalised Glass

Opalite (Synthetic Moonstone/Opal)

Synthetic Silica Glass

Opalite

Synthetic Opalised Glass

Opalite

Synthetic Opalised Glass

Opalite (Man-made Glass)

Synthetic Opalised Glass

Blue Obsidian

Volcanic Glass (Amorphous)

Red gemstone ring (likely synthetic ruby or red glass)

Possibly corundum (Al₂O₃), chromium-colored; identity cannot be confirmed from the image

Faceted Clear Gemstone (Likely Quartz or Cubic Zirconia)

Silicon Dioxide (SiO2) or Zirconium Dioxide (ZrO2)

Faceted Quartz or Cubic Zirconia

SiO2 (Quartz) or ZrO2 (Cubic Zirconia)

Mood Ring Stone

Liquid crystal thermotropic polymer