Man Made Material (Jewelry, Metal Alloy)

Blue topaz-style pendant (stone identity uncertain)

Possibly blue topaz (Al₂SiO₄(F,OH)₂); the image cannot confirm whether the stone is natural or synthetic

Aventurine Quartz

Silicon Dioxide (SiO2) with Fuchsite inclusions

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Green Aura Quartz (Titanium treated Kyanite or Quartz)

Silicon Dioxide (SiO2) or Aluminum Silicate (Al2SiO5) with Titanium/Metal Oxide coating

Native gold (gold nugget)

Native gold, Au; commonly alloyed with silver and copper

Green glass cabochon or tumbled stone

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

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Opalite

Synthetic Opalised Glass

Glass / Silicon Dioxide (Man-made)

SiO2 (Amorphous Silicon Dioxide)

Iron meteorite (likely)

Fe–Ni metallic meteorite, commonly kamacite–taenite

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Tumbled opalite (likely synthetic glass)

Opalite; typically man-made opalescent soda-lime glass, not a recognized mineral species

Colorless quartz crystal (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

Blue Celestite

Celestine (Strontium Sulfate, SrSO4)

Celestine (Celestite)

Strontium sulfate (SrSO4)

Blue goldstone

Man-made aventurine glass containing metallic copper particles; not a natural mineral

Likely polished quartz or glass-like mineral cabochon

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

White sea glass (naturally frosted glass fragment)

Man-made silicate glass, typically soda-lime glass; not a mineral or rock

Pink Quartz / Sea Glass

Silicon Dioxide (SiO2)

Copper ore-bearing rock (likely malachite/chrysocolla in a sulfide-rich matrix)

Cuprite–malachite/chrysocolla mineralization; probable copper sulfides such as chalcopyrite in altered host rock

Clear gemstone earring (likely cubic zirconia)

Cubic zirconia (synthetic zirconium dioxide, ZrO₂); identification from the image is uncertain

Native Copper

Native Copper (Cu)

Small rounded mineral pebble, possibly quartz

Uncertain; likely microcrystalline or crystalline SiO₂ (quartz), potentially with iron-oxide staining

Concretion with Geode Cavity

Ferruginous Sandstone Concretion with Quartz Center

Opalite

Synthetic Glass (Simulated Moonstone/Opal)

Clear quartz crystal (likely)

Quartz, silicon dioxide (SiO₂)

Lapis lazuli bead bracelet

Lapis lazuli, chiefly lazurite (Na₃Ca(Si₃Al₃)O₁₂S); commonly with calcite and pyrite

Blue Sandstone

Man-made glass with cobalt and copper inclusions

Sea Glass

Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature

Native silver fragment (probable)

Silver, Ag; possibly silver-bearing sulfide or plated metal

Metallic meteorite fragment (probable stony-iron or iron meteorite)

Undetermined meteoritic Fe–Ni alloy with silicate minerals

Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Bismuth crystal

Bismuth (Bi), commonly laboratory-grown

Clear quartz tumbled stone

Quartz (silicon dioxide, SiO₂)

Copper Nugget

Native Copper (Cu)

Tumbled milky quartz

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

Felsic Drill Core (likely Gneiss or Granite)

Felsic Metamorphic Rock (Gneissic profile)

Ironstone Concretion (Pot Stone)

Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)

Engineerged Quartz (Quartz Composite)

SiO2 (Silicon Dioxide) in a polymer resin matrix

Obsidian (Blue)

Volcanic Glass (SiO2)

Polished dendritic agate or jasper

Microcrystalline quartz (SiO₂), likely chalcedony with iron/manganese dendrites

Rock crystal quartz fragments

Quartz (silicon dioxide, SiO₂)