Mineral Based Human Made Alloy

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)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Ferrochrome Slag

Industrial Glassy Slag (Fe-Cr alloy byproduct)

Mystic Topaz (Treated Quartz or Topaz)

Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating

Tumbled serpentine

Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; approximately Mg₃Si₂O₅(OH)₄

Chert (Flint)

SiO2 (Microcrystalline Quartz)

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Opalite

Synthetic Opalised Glass

Amber

Succinite (Carbon-based organic compound; approximate formula C10H16O)

Blue glass-like tumbled specimen

Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image

Natural Pearl

Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3

Diamond ring

Diamond, crystalline carbon (C)

Quartzite (Engineered Stone)

Silicon Dioxide (SiO2) based synthetic composite

Heart-shaped faceted gemstone pendant

Likely yellow quartz (citrine) or synthetic yellow stone, set in metal with small clear accent stones

Bismuth Crystal

Bismuth (Bi)

Dyed Quartz (imitating Emerald/Green Quartz)

Silicon Dioxide (SiO2) with artificial pigment

Tumbled green glassy mineral, possibly aventurine or fluorite

Uncertain; likely quartz variety (aventurine quartz, SiO₂) or green fluorite (CaF₂)

Flaked stone projectile point

Likely worked chert or fine-grained silicified shale; exact lithology cannot be confirmed from the image

Tumbled iron-rich stone, likely hematite-bearing jasper

Jasper (microcrystalline quartz, SiO₂) with iron oxides, chiefly hematite/goethite

Native Gold

Gold (Au)

Concrete fragment with Aggregate

Anthropogenic Concrete with Calcarious and Siliceous Aggregate

Aura Quartz

Titanium or Gold bonded Silicon Dioxide (SiO2)

Dark, weathered stone—possibly basalt or slag

Indeterminate; likely fine-grained basalt (plagioclase–pyroxene)

Asphalt aggregate

Human-made bituminous asphalt containing crushed silicate rock aggregate

Gold

Native Gold (Au)

Native Copper

Native Copper (Cu)

Iridescent chalcopyrite (“peacock ore”)

Chalcopyrite, CuFeS₂, commonly surface-oxidized to covellite and related copper sulfides

Bismuth crystal

Bismuth (Bi), commonly laboratory-grown hopper crystal

Likely tumbled epidote-bearing rock or green jasper

Epidote-group silicate, possibly in a jasper or serpentinite matrix

Native Copper

Native Copper (Cu)

Stone bead bracelet

Unidentified polished natural-stone beads; possibly wood-grain jasper, agate, or serpentine

Transit Token (RTD Denver)

Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)

Note: Item is a Synthetic/Man-made Object

Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)

Coquina / Fossiliferous Limestone

Coquina (composed primarily of Calcium Carbonate / CaCO3)

Iridescent bismuth crystal

Bismuth (Bi), commonly laboratory-grown

Titanium Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Faceted colorless gemstone, likely quartz or glass imitation

Most likely quartz (SiO₂), though the strong glare and visible facet pattern could indicate cubic zirconia or lead glass

Green sea glass (likely slag glass or bottle glass)

Man-made soda-lime silicate glass; not a naturally occurring mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Opalite

Synthetic Opalised Glass

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Flint)

Cryptocrystalline Quartz (SiO2)