Man Made Material (Jewelry, Metal Alloy)

Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Green glass cabochon or tumbled stone

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

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)

Native silver fragment (probable)

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

Rock crystal quartz fragments

Quartz (silicon dioxide, SiO₂)

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

Undetermined meteoritic Fe–Ni alloy with silicate minerals

Engineerged Quartz (Quartz Composite)

SiO2 (Silicon Dioxide) in a polymer resin matrix

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite/Goethite inclusions

Tumbled opalite (likely synthetic glass)

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

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

Opalite

Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)

Sea Glass

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

Polished dendritic agate or jasper

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

Pyrite

Iron Sulfide (FeS2)

Goldstone (Brown/Gold variety)

Aventurine Glass (SiO2 with Copper inclusions)

Silver (Native Silver/Alloy Specimen)

Ag (Native Silver element), specifically a 90% Ag / 10% Cu alloy

Sea Glass (White/Clear)

Amorphous Silica (Alkali-Lime-Silica Glass), SiO2 + Na2O + CaO

Green Aura Quartz

Silicon Dioxide (SiO2) bonded with metallic vapors (typically Gold, Chromium, or Titanium)

Likely metallic meteorite fragment

Undetermined; possibly an iron meteorite or stony-iron meteorite

Pink Tumbled Quartz (Dyed)

Silicon Dioxide (SiO2)

Possible iron meteorite fragment

Iron meteorite, likely kamacite–taenite alloy

South Korean 100 Won Coin (Cupronickel)

Cupronickel Alloy (75% Cu, 25% Ni)

Copper

Native Copper (Cu)

Opalite

Synthetic Opalite Glass (Silicon Dioxide)

Polished gemstone tower assortment

Primarily quartz varieties and simulants; apparent amethyst (SiO₂), rose quartz (SiO₂), clear quartz (SiO₂), fluorite (CaF₂), sodalite, malachite, and possibly dyed or composite stones

Aura Quartz

Titanium/Titanium-Gold treated Silicon Dioxide (SiO2)

Diamond

Carbon (C)

Native copper nugget

Copper (Cu), often with cuprite or copper-oxide surface

Diamond (Cluster Ring)

Carbon (C)

Iron-rich meteorite candidate

Undetermined; possible stony-iron or iron meteorite, commonly kamacite–taenite alloy

Opalite

Synthetic Opalized Glass

Native Copper

Native Copper (Cu)

Likely iron meteorite or meteorite fragment

Unclassified meteoritic iron–nickel alloy, possibly an iron meteorite

Green Glass (often marketed as 'Obsidian' or 'Green Quartz')

Amorphous Silica (SiO2) with copper or chromium additives

Sandstone Concretion

Clastic Sedimentary Concretion (SiO2 with Iron Oxide)

Native copper-rich iron meteorite (likely Canyon Diablo/meteorite-like specimen)

Iron–nickel alloy, chiefly kamacite and taenite (Fe-Ni), with oxidized copper/iron sulfide inclusions

Beaded mineral/crystal jewelry (likely turquoise and coral accents)

Variable; blue beads may be turquoise (CuAl6(PO4)4(OH)8·4H2O), with possible dyed howlite, glass, or composite materials

Sea Glass (Teal/Turquoise)

Amorphous Silica (SiO2) with trace metal oxides

Native Copper (in coinage alloy)

Copper (Cu)