Man Made Object (Metal Alloy)

Gold (Elemental Metal)

Gold (Au)

Opalite (Man-made Glass)

Fused glass (typically made of dolomite and metal opacifiers)

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Possible iron-rich meteorite fragment

Unidentified Fe–Ni meteoritic material; identification cannot be confirmed from this blurry image

Opalite

Synthetic Silicon Dioxide (SiO2)

Aura Quartz (Pink/Rose Aura Quartz)

Silicon Dioxide (SiO2) bonded with Platinum and/or Silver

Titanium Coated Kyanite (Aura Kyanite)

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

Goldstone (Brown/Gold)

Aventurine Glass (Man-made glass with Copper inclusions)

Man-made Slag (Industrial Byproduct)

Anthropogenic Glassy Residue

Rainbow Hematite (Titanium Coated)

Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating

Goldstone (blue/black aventurine glass)

Man-made aventurine glass; silica glass containing metallic copper or other glittering inclusions

Clear faceted gemstone in a gold-colored setting

Likely colorless quartz (rock crystal) or synthetic cubic zirconia; visual identification is inconclusive

Dyed or synthetic turquoise-blue glass-like specimen

Likely man-made colored glass or resin; exact identification requires testing

Bismuth crystal aggregate

Bismuth (Bi), commonly laboratory-grown

Blue Goldstone

Aventurine Glass

Cubic Zirconia (Simulated Diamond)

Cubic Zirconia (ZrO2)

Blue-green cabochon, likely chalcedony or treated glass imitation

Cryptocrystalline quartz (chalcedony/possibly chrysoprase); identification uncertain from image

Blue Glass or Slag Glass

Amorphous Silica (Anthropogenic Glass)

Opalite

Synthetic glass / Opalized glass

Opalite

Synthetic Opalised Glass

Diamond (as set in a metal alloy ring)

Diamond (Pure Carbon, C)

Milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Tumbled black stone, likely black obsidian

Obsidian (volcanic glass; chiefly silica-rich rhyolitic composition)

Gold (10K Alloy)

Aurum (Au) with alloying metals (Cu, Ag, Zn)

Metallic sulfide mineral fragment, likely galena

Galena (lead sulfide, PbS), tentative identification

Pallasite Meteorite

Pallasite (ST-class)

Slag

Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)

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

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

Goldstone (aventurine glass)

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

Beaded mineral/crystal jewelry (likely turquoise and coral accents)

Variable; blue beads may be turquoise (CuAl6(PO4)4(OH)8·4H2O), with possible dyed howlite, glass, or composite materials

Native Silver

Silver (elemental Ag)

Polymictic conglomerate or breccia (possibly concrete-like aggregate)

Lithified polymictic gravel; clasts may include basalt, granite, quartzite, and other silicates

Opalite

Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)

Likely polished quartz or glass-like mineral cabochon

Probably quartz (SiO₂), though the image cannot exclude man-made glass

Titanium Amethyst Geode

Silicon Dioxide (SiO2) with Titanium/Metal Vapor Deposition Layer

Blue Goldstone

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

Sea Glass

Man-made silicate glass weathering product

Green glass cabochon or tumbled stone

Indeterminate; likely man-made glass, possibly aventurine glass rather than a natural mineral

Cullet Glass / Slag Glass

Amorphous silica glass

Dark green cabochon gemstone ring

Unknown; possibly green onyx (cryptocrystalline quartz, SiO₂) or another green gem

Blue Goldstone

Goldstone (artificial glass)

Tumbled milky quartz

Quartz — silicon dioxide (SiO₂), cryptocrystalline or microcrystalline variety possible