Mineral And Glass

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Beads (likely glass or man-made material)

N/A (artificial material)

Quartz (Variety of Rough Mineral Specimens)

Silicon Dioxide (SiO2)

Blue slag glass / industrial smelter slag

Man-made iron-rich silicate slag; composition variable, commonly Fe–Ca–Mg–Al silicates with glassy phases

Clear Quartz

Silicon Dioxide (SiO2)

Likely fluorite fragments

Fluorite (calcium fluoride, CaF₂)

Quartz-rich pegmatite specimen

Hydrothermal/pegmatitic quartz aggregate, chiefly SiO₂, with probable feldspar and mica/accessory sulfides

Tumbled aqua glassy mineral specimen, likely chrysocolla or turquoise imitation

Uncertain from image; possible chrysocolla (hydrated copper aluminosilicate, variable composition) or dyed/man-made glass

Blue Sapphire (Synthetic or Man-made Glass Imitation)

Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic

Clear quartz crystal/chunk

Quartz (silicon dioxide, SiO₂)

Muscovite Mica

Muscovite [KAl2(AlSi3O10)(OH)2]

Green Glass Cullet / Recycled Glass

Amorphous Silicon Dioxide (SiO2) with various metal oxides

Blue glass-like tumbled specimen

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

Tumbled blue glassy mineral specimen, possibly blue calcite or dyed quartz

Uncertain from image; likely calcite (CaCO₃) or dyed microcrystalline quartz (SiO₂)

Tumbled white chalcedony (likely milky quartz)

Chalcedony, microcrystalline quartz (SiO₂)

Quartz (Milky to Clear)

Silicon Dioxide (SiO2)

Opalite

Synthetic Silicon Dioxide (SiO2)

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

K-Feldspar (Potassium Feldspar / Pink Feldspar)

KAlSi3O8 (Potassium Aluminum Silicate)

Goldstone

Aventurine glass

Snowflake Obsidian

Volcanic Glass (SiO2 rich with Cristobalite inclusions)

Obsidian

Volcanic Glass (SiO2 + minor impurities)

Quartz Mineral

Silicon Dioxide (SiO2)

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Clear Quartz (Faceted) or Cubic Zirconia / Glass imitation

SiO2 (if Quartz), ZrO2 (if Cubic Zirconia)

Pegmatite with Mica

Granitic Pegmatite (containing Muscovite and Biotite)

Quartz

Silicon Dioxide (SiO2)

Polished black stone sphere (likely black basalt or black tourmaline)

Most likely fine-grained basalt (plagioclase–pyroxene); mineral identification is uncertain from the image alone

Tumbled quartz pebble, possibly citrine or iron-stained quartz

Quartz (SiO₂), likely microcrystalline or granular quartz

Goldstone

Not a natural mineral or rock. It is an ornamental glass.

Milky quartz (rough quartz fragment)

Quartz, silicon dioxide (SiO₂)

Botryoidal quartz (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Amethyst chip or tumbled fragment

Quartz, SiO₂; purple coloration from trace iron and irradiation

Opalite crescent pendant

Opalite (man-made opalescent glass; not a natural mineral)

Colorless quartz crystal (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

Sea Glass

Amorphous silicon dioxide (glass)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Snowflake Obsidian

Vitreous volcanic silicate (SiO2 with Cristobalite inclusions)

Man-made Crystal (Lead Glass)

Lead oxide-doped Silica Glass (approx. SiO2 + PbO)

Obsidian

Obsidian (principally SiO2 - Silicon Dioxide)

Quartz Mineral Specimens

Quartz (Silicon Dioxide, SiO2)

Opalite

Synthetic glass / Opaque silicious glass