Mineral And Glass

Blue Obsidian (Cullet Glass)

Silicon Dioxide (Amorphous Glass)

Cullet Glass (Industrial Slag Glass)

Amorphous Silica (SiO2) with metallic oxide impurities

Polished blue glassy mineral specimen, likely sodalite or blue aventurine

Most consistent with sodalite (Na₈Al₆Si₆O₂₄Cl₂), though dyed quartzite or blue glass cannot be excluded from the photograph

Green glass-like mineral specimen, likely fluorite

Fluorite (calcium fluoride, CaF₂), if natural; appearance may also indicate colored glass

Green glassy mineral specimen, likely chromium-bearing fluorite (tentative)

Fluorite, CaF₂, possibly green fluorite; identification uncertain from image

Goldstone (aventurine glass)

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

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(F,OH)2)

Blue-green glassy mineral specimen, likely aquamarine or pale fluorite

Tentatively beryl (Be₃Al₂Si₆O₁₈), aquamarine variety; identification is uncertain from the photograph

Chipped Glass/Plastic Fragment

Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic

Green sea glass or green glass-like tumbled material

Amorphous silicate glass; likely anthropogenic soda-lime glass, not a natural mineral

Goldstone (likely red/brown aventurine glass)

Man-made aventurine glass; copper-bearing silicate glass (not a natural mineral)

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Snowflake Obsidian

Volcanic Glass with Cristobalite inclusions (SiO2)

Moldavite (rough fragment)

Natural impact glass, chiefly SiO₂ with Al₂O₃ and trace oxides; tektite

Snowflake Obsidian

Obsidian with Cristobalite inclusions

Cobalt Glass Slug (Man-made Glass)

Amorphous Silica with Cobalt Oxide (SiO2 + CoO)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Tumbled amber-colored mineral or glassy pebble

Uncertain; likely chalcedony/quartz, possibly resinous amber or slag glass

Snowflake Obsidian

Volcanic Glass with Cristobalite inclusions (SiO2)

Fluorescent glassy mineral specimen, possibly hyalite opal

Hyalite (hydrated amorphous silica, SiO₂·nH₂O), tentative

Snowflake Obsidian

Spherulitic Volcanic Glass (primarily SiO2)

Clear quartz crystal (tentative)

Quartz, silicon dioxide (SiO₂)

Green glassy mineral fragment, possibly fluorite

Fluorite (calcium fluoride, CaF₂), tentative identification

Muscovite

Muscovite (KAl2(AlSi3O10)(OH)2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz with Muscovite Mica

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide (KAl2(AlSi3O10)(OH)2)

Tumbled blue glass-like specimen, possibly dyed chalcedony or synthetic glass

Uncertain; possible dyed quartz/chalcedony (SiO₂), but appearance strongly suggests cobalt-blue glass

Mica / Muscovite or Biotite

Phyllosilicate mineral group (e.g., KAl2(AlSi3O10)(OH)2)

Opalite

Synthetic Opalite Glass / Opalized Glass

Green Slag Glass

Cullet (Amorphous Silicon Dioxide with impurities)

Snowflake Obsidian

Volcanic Glass (SiO2) with Cristobalite inclusions

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Gemstone Ring

Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Opalite

Synthetic glass / Opalized glass

Green sea glass (likely slag glass or bottle glass)

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

Snowflake Obsidian (Polished Cabochon)

Obsidian with Spherulitic Cristobalite (SiO2)

Obsidian

Volcanic Glass (SiO2)

Green sea glass (likely bottle glass)

Man-made soda–lime silicate glass; not a natural mineral