Man Made Object (Metal Alloy)

Sea Glass (Turquoise/Aqua)

Amorphous Silica (SiO2) with transition metal dopants

Goldstone (aventurine glass)

Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone

Black Onyx

Chalcedony (SiO2)

Blue Impression Jasper beads

Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions

Milky chalcedony cabochon ring

Chalcedony, microcrystalline quartz (SiO₂), likely white or pale agate variety

Likely metallic meteorite fragment

Undetermined; possibly an iron meteorite or stony-iron meteorite

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

Carved Soapstone or Serpentine-rich rock

Amber cabochon pendant

Amber (fossilized tree resin; chiefly polymerized terpenoids)

Green aventurine bead bracelet

Quartz (SiO₂), typically green quartzite/aventurine colored by fuchsite mica or other inclusions

Turquoise-colored ring stone (possibly turquoise or imitation)

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; identity cannot be confirmed from the image

Possible basalt or industrial iron-rich slag

Basalt (plagioclase–pyroxene rock); identification uncertain from image

Gold

Native Gold (Au)

Man-made Synthetic Material (Not a rock or mineral)

Polyester (Polyethylene terephthalate) / Faux Fur

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Blue Sapphire (Synthetic or Man-made Glass Imitation)

Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic

Terracotta (Man-made ceramic brick fragment)

Baked clay / High-iron ceramic (Silicate-based ceramic)

Weathered metallic meteorite (probable iron meteorite)

Fe–Ni alloy, mainly kamacite and taenite; exact classification requires chemical and petrographic testing

Beaded blue-and-green gemstone jewelry

Likely dyed or treated chalcedony/agate and green aventurine or glass-like stone; exact identification requires testing

Black Onyx

Chalcedony (SiO2)

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Lapis lazuli and green-blue chalcedony jewelry

Lapis lazuli: lazurite-bearing metamorphic rock, chiefly lazurite (Na₃Ca(Al₃Si₃O₁₂)S) with calcite and pyrite; second stone: likely chrysoprase or green-blue chalcedony (microcrystalline quartz, SiO₂)

Native copper-bearing rock (probable copper ore)

Native copper (Cu), likely with cuprite (Cu₂O), malachite (Cu₂CO₃(OH)₂), and iron-oxide matrix

Chert (likely flint)

Microcrystalline quartz, SiO₂

Blue goldstone

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

Pearl-embellished decorative cross

Pearl (biogenic calcium carbonate, predominantly aragonite) with rhinestone-mounted glass or synthetic gemstones

Rounded basaltic river pebble

Basalt, predominantly plagioclase and pyroxene, commonly with olivine and iron oxides

Pallasite Meteorite

Pallasite (Stony-Iron Meteorite)

Hematite Beads

Hematite (Fe2O3)

Blue chalcedony cabochon (probable)

Chalcedony, a cryptocrystalline variety of quartz; silicon dioxide, SiO₂

Blue glassy mineral specimen, possibly dyed or synthetic

Uncertain; possible blue fluorite (CaF₂), dyed chalcedony, or man-made glass

Buffalo Nickel (Indian Head Nickel)

Cupronickel (75% Copper, 25% Nickel)

Sandstone (Water-worn Cobble)

Arenite (SiO2 with CaCO3 or Fe2O3 cement)

Green Glass Cullet / Recycled Glass

Amorphous Silicon Dioxide (SiO2) with various metal oxides

Zircon

Zircon (Zirconium Silicate - ZrSiO4)

Synthetic Blue Aura Quartz

Silicon Dioxide (SiO2) with Metallic Infusion

Faceted yellow-brown gemstone earring

Likely citrine (quartz, SiO₂), though treated quartz or synthetic glass cannot be confirmed from the image

Stainless Steel Spoon

Iron-Chromium Alloy (Fe + Cr + Ni)

Brown agate or chalcedony cabochon pendant

Microcrystalline quartz (SiO₂), likely brown chalcedony/agate

Diorite (River Pebble)

Intermediate plutonic igneous rock

Faceted citrine pendant

Citrine, gem-quality quartz (SiO₂), likely heat-treated amethyst

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

Polished black stone pendant

Likely black obsidian or black tourmaline; exact identification is uncertain from the photograph