Mineraloid Like Synthetic Material

Ring with an Orange Inlay

N/A (Man-made object)

Opalite Egg

Synthetic Glass (Simulated Opal)

Goldstone (Brown)

Aventurine glass

Faceted yellow gemstone (possibly citrine or synthetic glass)

Undetermined; citrine is yellow quartz (SiO₂), but the image cannot confirm the material

Blue gemstone ring, likely blue topaz or synthetic blue spinel

Likely topaz (Al₂SiO₄(F,OH)₂) or synthetic spinel (MgAl₂O₄); identification is uncertain from the image

Bouncy Ball (Synthetic Rubber Polymer)

Polybutadiene / Ethylene Vinyl Acetate (EVA)

Small stud earring with a purple gemstone (possibly amethyst)

Possible amethyst, a purple variety of quartz (SiO₂); identification is uncertain from the image

Diamond-set gold ring

Diamond (crystalline carbon, C) set in a gold alloy; the metal and setting are manufactured

Mahogany Obsidian

Volcanic Glass (SiO2 + Fe2O3)

Limonite/Ironstone

Limonite (FeO(OH)·nH2O)

Pink faceted gemstone, possibly pink sapphire

Uncertain from the image; possibly corundum (Al₂O₃)

Green cabochon gemstone, likely glass-filled or synthetic emerald imitation

Uncertain; possible synthetic emerald (beryl, Be₃Al₂Si₆O₁₈) or green glass

Opalite (Man-made Glass)

Synthetic Opalised Glass

Opalite

Synthetic glass / Simulated opal

Painted River Rock

Artificially Coated Sedimentary Rock

Gemstone Ring

Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)

Black Obsidian

Volcanic Glass (SiO2 + MgO / Fe3O4)

Snowflake Obsidian

Volcanic glass (SiO2) with Cristobalite (SiO2) inclusions

Green faceted gemstone earrings, likely synthetic emerald-colored glass or cubic zirconia

Undetermined; possible glass (amorphous silicate) or synthetic cubic zirconia (ZrO₂)

Amber (Black)

Amber (succinite, retinite, etc., specifically, heavily included/dark varieties)

Obsidian

Volcanic glass (SiO2 - Silicon Dioxide with impurities)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Black faceted gemstone, possibly black spinel or onyx

Undetermined; candidates include spinel (MgAl₂O₄) or chalcedony (SiO₂)

Opalite

Synthetic glass (Opalite simulant)

Green faceted gemstone, likely synthetic glass or chrome-dyed stone

Undetermined; possibilities include green tourmaline, synthetic emerald, glass, or dyed quartz

Faceted citrine-colored gemstone

Likely citrine (quartz, SiO₂); possibly yellow glass or synthetic gem

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (SiO2) with metallic oxide impurities

Blue cabochon gemstone, likely synthetic glass or dyed stone

Indeterminate from image; possible glass, synthetic spinel, sodalite, or lapis lazuli

Mahogany Obsidian

Obsidian (volcanic glass with hematite/magnetite inclusions)

Cubic Zirconia

Zirconium dioxide (ZrO2)

Red faceted gemstone, likely synthetic ruby or red spinel

Ruby: corundum (Al₂O₃); spinel: MgAl₂O₄; visual identification alone is insufficient

Red glassy mineral specimen, likely synthetic ruby or red spinel

Most consistent with synthetic corundum (Al₂O₃, ruby) or synthetic spinel (MgAl₂O₄); exact identification requires testing

Staurolite (Fairy Stone)

Staurolite (Fe2+2Al9Si4O23(OH))

Slag (Industrial Glass)

Artificial Vitreous Silicate

Opalite-style pendant (likely synthetic glass, not natural opal)

Opalescent glass; commonly sold as “opalite” (not a recognized mineral species)

Snowflake Obsidian

Volcanic glass (SiO2 - Silicon Dioxide with Cristobalite inclusions)

Amber with Inclusion

Succiniferous fossil resin (C10H16O)

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

Obsidian

Volcanic glass (SiO2 - Silicon Dioxide with impurities)

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

Boulder Opal

Hydrated Silica (SiO2·nH2O)

Green Opal

Hydrated amorphous silica (SiO2·nH2O) with inclusions