Mineral (Metal)

Diamond jewelry

Diamond (crystalline carbon, C)

Goldstone (aventurine glass)

Man-made copper-bearing glass; not a natural mineral (commonly sold as blue/brown goldstone)

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

Synthetic Zinc/Polycarbonate Composite (Bey-specimen)

Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay

Turquoise cabochon pendant

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O; likely stabilized or imitation turquoise

Possible weathered iron-rich rock or slag fragment

Indeterminate; likely limonite/goethite-bearing material, possibly iron slag

Black tourmaline (likely schorl), polished cabochon

Schorl tourmaline, NaFe3Al6(BO3)3Si6O18(OH)4

Milky Quartz

Quartz (Silica / Silicon Dioxide - SiO2)

Amber (likely a small polished amber piece)

Natural fossil resin; amber is an organic mineraloid, not a crystalline mineral. The image alone cannot confirm authenticity.

Diamond ring

Diamond (crystalline carbon, C)

White chalcedony (likely moonstone or milky quartz) earrings

Probably chalcedony, microcrystalline SiO₂; exact identification is uncertain from the image

Green aventurine cabochon earrings

Aventurine quartz (SiO₂), likely green quartzite with fuchsite mica

Slag Glass (Cullet)

Amorphous Silicon Dioxide (SiO2) with metal oxide colorants

Pyrite

Iron Sulfide (FeS2)

Slag Glass

Vitreous Silicate Residue

Rutilated quartz (likely a cabochon set in metal)

Quartz, SiO₂, containing rutile inclusions (TiO₂)

Pyrite and Quartz Agglomerate

Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)

Porphyritic basalt

Basalt with pink potassium-feldspar phenocrysts; likely alkaline or trachybasaltic composition

Emerald in Matrix

Beryl (Be3Al2Si6O18) containing Chromium/Vanadium impurities

Faceted brown gemstone ring, likely smoky quartz

Smoky quartz (SiO₂), identification uncertain from the image

Mixed small pebbles and mineral grains

Unidentified detrital sediment; likely quartz-, feldspar-, and lithic fragments

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) in matrix

Gossan (Limonite/Ironstone)

Hydrated Iron Oxide (FeO(OH)·nH2O)

Opalite

Synthetic Glass (typically Silica/Magnesium based with metal additives)

Slag

Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)

Quartzite pebble

Meta-quartzite (SiO2)

Polished unakite pendant

Unakite: quartz + epidote + pink potassium feldspar

Copper-bearing Quartz (with Malachite and Iron Oxides)

Quartz (SiO2) with Malachite (Cu2CO3(OH)2) and Hematite/Limonite (Fe2O3)

Vesicular basalt (possible scoria)

Basaltic volcanic rock; chiefly plagioclase, pyroxene, and iron-rich minerals, with vesicles formed by trapped gas

Limonite-stained Quartz

Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O) coatings

Slag

Anthropogenic Vitreous Silica/Iron oxides

Iron Slag

Anthropogenic Vitreous Silicate (Byproduct of Smelting)

Opalite

Man-made Synthetic Glass (Silicon Dioxide with metal additives)

Multicolored gemstone ring, likely set with tourmaline or mixed colored stones

Unidentifiable from the image; possible tourmaline (complex borosilicate) and/or other colored gemstones in a metal setting

Quartz Sand

Silicon Dioxide (SiO2)

Quartzite Pebble

Metamorphic Quartzite (primarily SiO2)

Slag

Anthropogenic Iron Silicate Glass

Pale green tumbled mineral, likely prehnite

Prehnite — Ca₂Al(AlSi₃O₁₀)(OH)₂; identification is provisional from the photograph

Quartzite Pebble

Quartzite (SiO2)

Black tourmaline pendant

Schorl tourmaline, NaFe3Al6(BO3)3Si6O18(OH)4

Serpentinite

Serpentinite (complex silicate mineral group (Mg,Fe)3Si2O5(OH)4)

Gold Ore in Quartz

Native Gold (Au) in Quartz (SiO2) matrix