Man Made Material (Jewelry, Metal Alloy)

Carborundum (Silicon Carbide)

Silicon carbide (SiC)

Green Glass Cullet / Recycled Glass

Amorphous Silicon Dioxide (SiO2) with various metal oxides

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂), opaque-to-translucent milky variety

Aura Quartz (Titanium-coated Quartz)

Silicon Dioxide (SiO2) with metallic vapor coating

Diamond ring

Diamond (crystalline carbon, C)

Green Obsidian Sphere (man-made glass)

Vitreous Silica with Chromium/Iron additives

Native Gold Flake

Gold (Au)

Silver (Jewelry form)

Native Silver (Ag)

Possible sea glass (naturally frosted glass), not a confirmed geological specimen

Man-made silicate glass; composition varies, commonly soda-lime glass

Blue faceted gemstone ring, likely synthetic sapphire or blue topaz

Uncertain from image; possible corundum (Al₂O₃) or topaz (Al₂SiO₄(F,OH)₂)

Black glassy fragment, likely obsidian or industrial glass

Volcanic glass (obsidian), chiefly amorphous SiO₂; identification uncertain from image

Bismuth Crystal

Bismuth (element symbol Bi, atomic number 83)

Green Aventurine

SiO2 (Silicon Dioxide with Fuchsite inclusions)

Tumbled milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Crackle Agate / Dyed Quartz

SiO2 (Silicon Dioxide)

Bismuth Crystal

Bismuth (Bi)

Green Quartz / Chrysoprase / Sea Glass

Silicon Dioxide (SiO2)

Gold bullion bars

Native gold (Au), likely cast or refined metal

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

Rounded graywacke or sandstone cobble

Lithified clastic sandstone; likely quartz–feldspar–lithic grain aggregate in a silica or calcite matrix

Dyed or synthetic turquoise-blue glass-like specimen

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

Sandstone Concretion

Limonitic Sandstone Concretion

Possible iron meteorite

Iron meteorite, likely kamacite–taenite alloy

Aura Quartz (Titanium/Rainbow Quartz)

SiO2 (Silicon Dioxide) with metallic coating

Chakra Stone (Composite / Man-made Bonded Gemstones)

Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)

Diamond ring

Diamond (crystalline carbon, C) set in a metal ring; the small stones appear diamond-like but cannot be confirmed from the image.

Goldstone

Avventurina (Cu + SiO2 glass)

Cassiterite (Tin Ore)

Cassiterite (Tin(IV) Oxide, SnO2)

Mineral Sand (Heavy Mineral Sand Concentrate)

Placer deposit concentrate containing minerals such as ilmenite, rutile, zircon, and magnetite

Inlaid stone ring (likely jasper or agate)

Likely microcrystalline quartz (chalcedony, SiO₂), possibly jasper, with decorative mineral inlays

Green agate/chalcedony bead necklace

Microcrystalline quartz (SiO₂), likely green chalcedony or dyed green agate

Libyan Desert Glass

Tektite (high-silica impact glass), SiO2

Iron meteorite candidate

Probable iron-rich meteorite; possible stony-iron or weathered nickel–iron alloy

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Diamond bracelet (gold-set)

Diamond, crystalline carbon (C); gold alloy setting

Man-made Carved Stone (Scream Mask/Skull motif)

Carved Soapstone or Serpentine-rich rock

Likely blue glass or synthetic gemstone jewelry

Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass

Celestine (Celestite)

Celestine (Strontium Sulfate, SrSO4)

Blue-green gemstone ring, likely treated turquoise or synthetic/treated beryl

Indeterminate from image; possibilities include turquoise (CuAl6(PO4)4(OH)8·4H2O), apatite, or treated beryl

Goldstone (with Tiger's Eye and Quartz)

Aventurine glass (Synthetic SiO2 with Cu inclusions)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Clear quartz fragment (rock crystal)

Quartz, silicon dioxide (SiO₂)