Man Made Object (Metal Alloy)

Opalite

Synthetic glass / Opalized glass

Black beaded bracelet, likely black onyx or glass

Possibly chalcedony (microcrystalline quartz, SiO₂); the beads may instead be man-made 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 Goldstone

Aventurine Glass

Diamond (as set in a metal alloy ring)

Diamond (Pure Carbon, C)

Blue Glass or Slag Glass

Amorphous Silica (Anthropogenic Glass)

Gold (10K Alloy)

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

Bismuth crystal aggregate

Bismuth (Bi), commonly laboratory-grown

Metallic sulfide mineral fragment, likely galena

Galena (lead sulfide, PbS), tentative identification

Opalite

Synthetic Opalised Glass

Pallasite Meteorite

Pallasite (ST-class)

Goldstone (aventurine glass)

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

Opalite

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

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

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

Native Silver

Silver (elemental Ag)

Likely polished quartz or glass-like mineral cabochon

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

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

Slag

Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)

Milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Tumbled black stone, likely black obsidian

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

Polymictic conglomerate or breccia (possibly concrete-like aggregate)

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

Opalite (likely man-made glass)

Opalite is a trade name for opalescent glass, not a natural mineral; composition is typically silica glass with additives

Titanium Amethyst Geode

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

Green glass cabochon or tumbled stone

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

Blue goldstone (man-made glass)

Copper-bearing aventurine glass; synthetic silicate glass

Gem-set gold ring

Gold alloy setting with a colorless faceted gemstone, possibly quartz or glass; the stone cannot be identified reliably from the image

Slag Glass (Cullet)

Amorphous Silica (man-made), primarily SiO2 with trace metal oxides

Man-made Glass (Tumbled/Shaped)

Amorphous Silicon Dioxide (SiO2) with metal oxide colorants

Blue Goldstone

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

Sea Glass

Amorphous Silicon Dioxide (SiO2)

Cullet Glass / Slag Glass

Amorphous silica glass

Sea Glass

Man-made silicate glass weathering product

Green Sea Glass

Amorphous Silica (man-made glass), SiO2 + additive metal oxides

Gemstone-set ring, likely cubic zirconia or diamond

Likely synthetic cubic zirconia (zirconium dioxide, ZrO₂); stones may alternatively be diamond (carbon, C)

Blue Goldstone

Goldstone (artificial glass)

Blue opalite glass (likely man-made)

Opalite glass; a silica-based amorphous glass, not natural opal

Man-made Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating/dye

Carved Mottled Greenish-Yellow Crystal/Glass Object

Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.

Dark green cabochon gemstone ring

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

Nickel coin (U.S. currency)

Cupronickel (75% Copper, 25% Nickel alloy)

Smelter Slag

Anthropogenic Silicate Slag