Mineral And Glass

Celestite

Celestine (Strontium Sulfate, SrSO4)

Celestite (Celestine)

Strontium sulfate (SrSO4)

Milky quartz (rough quartz fragment)

Quartz, silicon dioxide (SiO₂)

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Milky quartz (rose-tinted quartz)

Quartz, silicon dioxide (SiO₂)

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Lepidolite Bracelet

Lepidolite (K(Li,Al)3(Si,Al)4O10(F,OH)2) often in Quartz matrix

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Fluorite with Rhodochrosite

Fluorite (CaF2) and Rhodochrosite (MnCO3)

Blue sea glass or blue glassy mineral fragment

Uncertain; likely man-made soda-lime glass, not a natural mineral

Blue Obsidian (Cullet Glass)

Silicon Dioxide (Amorphous Glass)

Muscovite

Muscovite mica, KAl2(AlSi3O10)(OH)2

Goldstone (Brown)

Aventurine glass

Green glassy slag or manufactured glass bead

Noncrystalline silicate glass; likely industrial glass/slag, not a true mineral

Cullet Glass (Industrial Slag Glass)

Amorphous Silica (SiO2) with metallic oxide impurities

Likely clear quartz fragment

Quartz (SiO₂)

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

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Blue Obsidian (Cullet Glass)

Man-made silicate glass

Green glass-like mineral specimen, likely fluorite

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

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

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

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

Muscovite Mica

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

Goldstone (aventurine glass)

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

Blue goldstone (man-made glass)

Copper-bearing aventurine glass; synthetic silicate glass

Goldstone (likely red/brown aventurine glass)

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

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Chipped Glass/Plastic Fragment

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

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

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

Obsidian

Volcanic Glass (Silica-rich glass)

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Muscovite

KAl2(AlSi3O10)(OH)2

Green sea glass or green glass-like tumbled material

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

Polished opalite (likely man-made opalescent glass)

Opalite is a commercial name, not a mineral; typically opalescent glass, often soda-lime silicate glass

Blue Goldstone

Man-made glass infused with copper crystals

Green sea glass (likely)

Anthropogenic glass, not a mineral; composition commonly soda–lime silicate glass

Muscovite

KAl2(AlSi3O10)(OH)2

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Snowflake Obsidian

Volcanic Glass with Cristobalite inclusions (SiO2)