Man Made Material (Jewelry, Metal Alloy)

Milky quartz (likely rough quartz crystal)

Quartz, silicon dioxide (SiO₂)

Native Copper

Native Copper (Cu)

Iron Meteorite Fragment

Siderite (Geological term for iron meteorite class - Fe/Ni alloy)

Decorative gemstone-chip jewelry (likely turquoise, coral, and assorted beads)

Predominantly turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; other pieces appear to be dyed coral or red stone, and possibly shell/metal components

Copper-bearing rock, likely native copper in a weathered matrix

Native copper (Cu), tentatively with copper sulfide/oxide minerals

Dyed Agate / Painted Stone

Silicon Dioxide (SiO2) with artificial pigment

Polished black stone, likely black obsidian

Volcanic glass; predominantly rhyolitic silica glass (SiO₂-rich)

Chalcopyrite on Quartz

Copper Iron Sulfide (CuFeS2)

White quartz pebble

Quartz (SiO₂), likely milky quartz

Sea Glass (Frosted Glass)

Amorphous Silica (SiO2) with various metal oxide impurities

Turquoise ring

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; the setting appears to be silver-colored metal

Cupronickel Coin

Copper-Nickel Alloy (typically 75% Cu, 25% Ni)

Blue Goldstone

Aventurine Glass (Silicon Dioxide with metal inclusions)

Sandstone Concretion

Septarian or Carbonate-cemented Sandstone Concretion

Faceted purple-blue beads, likely synthetic glass or treated gemstone

Indeterminate; possible synthetic corundum, synthetic spinel, or dyed quartz (SiO₂)

Likely green aventurine or nephrite jade ring

Aventurine quartz (SiO₂) or nephrite, a variety of tremolite–actinolite amphibole

Gold Nugget

Native Gold (Au)

Raw quartz crystal

Quartz (silicon dioxide, SiO₂), likely milky or included quartz

Tumbled quartz pebble

Quartz, silicon dioxide (SiO₂), likely milky quartz

Dalmatian jasper

Porphyritic microcrystalline quartz-rich rock, commonly sold as Dalmatian jasper; spots are chiefly arfvedsonite/amphibole minerals, sometimes altered feldspar

Pyrulite (Pyrite / Chalcopyrite)

Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)

Clear quartz crystal pendant

Quartz (silicon dioxide, SiO₂)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC) / Moissanite (natural form)

Diamond

Native Carbon (C)

Native bismuth

Bismuth (Bi), commonly forming hopper crystals or aggregates

Gemstone-set ring, likely cubic zirconia or diamond

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

Native bismuth

Bismuth (Bi), commonly with a naturally oxidized surface

Green glass-like mineral specimen, likely fluorite

Fluorite (calcium fluoride, CaF₂), if natural; appearance may also indicate colored glass

Polished green-and-black banded cabochon (likely malachite imitation or dyed agate)

Uncertain; possible malachite (Cu₂CO₃(OH)₂), banded agate (SiO₂), or man-made glass

Iron-rich meteorite fragment (probable stony-iron or iron meteorite)

Unclassified Fe–Ni meteorite; possible weathered iron meteorite

Multi-stone gemstone ring

Likely faceted blue topaz or synthetic blue stone with clear stones, possibly cubic zirconia or diamond; metal setting appears silver-colored alloy

Libyan Desert Glass

Impact-melt silica glass (SiO2 + traces of Al, Fe, Ti)

Green Slag

Anthropogenic Silicate Glass

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Man-made earbud charging case (Not a rock or mineral)

Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components

Cullet Glass (Man-made Glass Slag)

Amorphous Silica (SiO2) with chemical additives

Possible iron meteorite

Iron meteorite, likely an ataxite or coarse octahedrite; composition mainly Fe–Ni alloy

Slag Glass (Leland Blue variant)

Anthropogenic Vitreous Silicate

Brick

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

Aventurine

Quartz containing inclusions of Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Likely yellow quartz gemstone ring

Quartz (SiO₂), possibly heat-treated citrine or lemon quartz; metal setting appears to be brass/gold-colored alloy

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)