Synthetic Glass (Man Made)

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Man-made)

Blue Slag Glass

Man-made Silicon Dioxide (Amorphous)

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

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

One Pound Coin (UK)

Nickel-Brass Alloy (Cu-Zn-Ni)

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

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

Tumbled Clear Quartz/Rock Crystal

Silicon Dioxide (SiO2)

Polymer Clay (Mock Mineral)

Polyvinyl chloride (PVC) with plasticizers and pigment

Milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Blue glassy gemstone-like specimen

Indeterminate; possibly dyed or treated turquoise, blue apatite, or man-made glass

Red gemstone ring, likely garnet or synthetic ruby

Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish

Tumbled milky quartz

Quartz — silicon dioxide (SiO₂), cryptocrystalline or microcrystalline variety possible

Green Sea Glass

Man-made vitreous material (silica glass)

Colorless faceted gemstone, likely glass or quartz

Uncertain; possibly quartz (SiO₂), but the strong uniform brilliance and apparent molded/faceted form may indicate leaded glass or cubic zirconia

Goldstone (Red)

Aventurine Glass (SiO2 + Cu)

Red glassy gemstone, possibly garnet

Unidentified red transparent material; garnet group (X₃Y₂(SiO₄)₃) is a possibility

Blue Goldstone

Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)

Terrazzo (Man-made Composite)

Cementitious or Resin-bound Lithic Composite

Quartz crystal fragment (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Tumbled milky quartz

Quartz (SiO₂), cryptocrystalline-to-massive variety

Diamond (or Simulant)

Carbon (C) or relevant simulant formula (e.g., ZrO2 for Cubic Zirconia)

Clear Quartz Sphere (Rock Crystal)

Silicon Dioxide (SiO2)

Sea Glass

Amorphous silicon dioxide (man-made glass weathered by nature)

Pearl and Garnet Glass

Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass

Beads (likely glass or man-made material)

N/A (artificial material)

Sea Glass

Man-made silicate glass (Amorphous silicon dioxide)

Not a geological specimen

N/A (man-made object)

Blue Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Polished opalite (likely man-made opalescent glass)

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

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂), opaque-to-translucent milky variety

Goldstone (Brown/Gold variety)

Aventurine Glass (SiO2 with Copper inclusions)

Green Quartz / Chrysoprase / Sea Glass

Silicon Dioxide (SiO2)

Sea Glass

Man-made vitreous material (silica-based glass)

Likely tumbled red mineral or glass imitation

Indeterminate; possibilities include red jasper (microcrystalline quartz, SiO₂) or dyed chalcedony

Sea Glass

Man-made silicate glass weathering product

Clear quartz fragment

Quartz (silicon dioxide, SiO₂)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Note on Image Identification: Textile

N/A (Anthropogenic material)

Artificial Rock Face (Faux Rock)

Glass Fiber Reinforced Concrete (GFRC)

Man-made earbud charging case (Not a rock or mineral)

Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components

Diamond

Native Carbon (C)

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)