Man Made Mineral Simulant (Glass)

Diamond (or Cubic Zirconia)

Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ

Likely milky quartz fragment

Quartz (SiO₂)

Tumbled orange-and-white feldspar-rich stone, likely sunstone or orange feldspar

Likely potassium feldspar (orthoclase or microcline), KAlSi₃O₈; exact identification is uncertain from the image

Glass Nugget (Tumbled Glass)

Amorphous Silicon Dioxide (SiO2) with additives

Diamond bracelet (gold-set)

Diamond, crystalline carbon (C); gold alloy setting

Faceted clear gemstone in an ornate ring

Likely colorless cubic zirconia (zirconium dioxide, ZrO₂); the image is insufficient to distinguish it from diamond or glass

Nickel coin (U.S. currency)

Cupronickel (75% Copper, 25% Nickel alloy)

Red glass-like crystal, likely synthetic ruby or red glass

Uncertain from image; possible corundum (ruby), Al₂O₃, or synthetic glass

Rough Sapphire (Corundum)

Corundum (Al2O3)

Moonstone cabochon ring

Adularia moonstone, potassium feldspar (orthoclase, KAlSi₃O₈), possibly imitation or another white translucent gemstone

Pink Granite

Phaneritic Felsic Igneous Rock (Granite)

Sandstone

Clastic Sedimentary Rock

Chert

Microcrystalline Quartz (SiO2)

Granodiorite

Granodiorite

Red gemstone ring, likely synthetic ruby or red spinel

Ruby: corundum (Al₂O₃); spinel: MgAl₂O₄; exact identity requires testing

Serpentinite

Serpentine group minerals (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Polished amethyst-bearing quartz

Quartz, SiO₂; purple coloration from irradiation and trace iron

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, zirconium dioxide (ZrO₂); possibly synthetic quartz or glass imitation

Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)

Silicon Dioxide (SiO2) with metallic inclusions

Blue sapphire ring

Corundum (aluminum oxide, Al₂O₃), likely heat-treated sapphire

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

Mixed polished gemstone and mineral collection

Primarily quartz varieties (SiO₂), plus probable aventurine, rose quartz, amethyst, agate, jasper, serpentine, feldspar, and possibly dyed or man-made glass pieces

Cut gemstone, likely diamond

Diamond (crystalline carbon, C)

Diamond (or Cubic Zirconia simulant)

Carbon (C) or Zirconium Dioxide (ZrO2)

Likely blue glass or synthetic gemstone jewelry

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

Polished blue chalcedony (possibly agate)

Microcrystalline quartz, SiO₂; chalcedony, potentially banded agate

Metal Chain (Likely Steel or a Steel Alloy)

Steel (primarily iron and carbon); specific alloy unknown

Tumbled chalcedony (likely moss or dendritic agate)

Microcrystalline quartz, SiO₂, with iron-oxide inclusions

Blue glass-like tumbled specimen

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

Porcelain (Stoneware Ceramic)

Mullite / Silica-glass composite (Al6Si2O13)

Native Silver

Silver (elemental Ag)

Slag (Anthropogenic Glass/Iron byproduct)

Ferro-silicate Slag

Pumice or vesicular volcanic tuff

Pumice: highly vesicular volcanic glass, chiefly rhyolitic to dacitic; possible tuff: lithified ash and pumice fragments

Howlite

Howlite (Calcium borosilicate hydroxide, Ca2B5SiO9(OH)5)

Green Glass Slag

Amorphous Silicon Dioxide (SiO2) with metal oxide impurities

Tumbled blue chalcedony (possibly blue agate)

Microcrystalline quartz, SiO₂; chalcedony variety

Titanium Aura Quartz (Aura Quartz)

Titanium-coated Silicon Dioxide (SiO2)

Sandstone

Sedimentary Rock (Quartz Sandstone)

Jasper

Silicon dioxide (SiO2) with impurities

Clear-stone silver-tone teardrop earring

The stones may be colorless quartz or glass; the image does not allow reliable identification. Metal setting appears silver-tone.

Green iridescent glass cabochon or synthetic gemstone

Likely synthetic glass; possibly coated synthetic quartz or lab-created green gemstone

Blue Slag Glass

Amorphous Silica (Industrial byproduct)