Synthetic (Glass)

Sapphire

Corundum (Al₂O₃) with trace elements causing color variations.

Apatite

Apatite group mineral (e.g., Fluorapatite - Ca5(PO4)3F, Chlorapatite - Ca5(PO4)3Cl, Hydroxylapatite - Ca5(PO4)3(OH))

Green Slag Glass (Cullet)

Amorphous Silica (Industrial Glass Byproduct)

Sodalite

Sodalite (Na4Al3Si3O12Cl)

Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)

N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)

Emerald

Beryl (variety Emerald), Be3Al2Si6O18 with Cr and/or V

Magnetic Hematite

Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)

Multi-stone gemstone ring

Likely faceted blue topaz or synthetic blue stone with clear stones, possibly cubic zirconia or diamond; metal setting appears silver-colored alloy

Cullet Glass (Industrial Slag Glass)

Amorphous Silica (SiO2) with metallic oxide impurities

Blue Obsidian (Cullet Glass)

Silicon Dioxide (Amorphous Glass)

Shale with Vein Infillings

Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.

N/A - Image is non-geological

Acrylonitrile Butadiene Styrene (ABS) or Polypropylene (PP)

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

Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components

3D Printed PLA Elephant (Silk Multi-color)

Polylactic Acid (C3H4O2)n

Portable Ceramic Space Heater

Polished Acrylonitrile Butadiene Styrene (ABS) Plastic with Ceramic Heating Elements

Asphalt (Bituminous Concrete)

Bituminous Concrete / Pavement

Green glassy slag or manufactured glass bead

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

Green Slag Glass

Cullet (Amorphous Silicon Dioxide with impurities)

Cullet Glass (Slag)

Amorphous Silicon Dioxide (Man-made)

Blue tumbled glass-like specimen; likely blue slag glass

Likely man-made glass (silicate glass), not a natural mineral; exact material cannot be confirmed from the image

Blue sea glass or blue glassy mineral fragment

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

Sea glass (likely pale blue glass)

Human-made silicate glass, likely soda-lime glass; not a natural mineral or rock

Sea Glass (Frosted Glass)

Amorphous Silica (SiO2) with various additives

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (SiO2) with metallic oxide impurities

Slag Glass

SiO2 (Silicon Dioxide) with impurities

Green sea glass or green glass-like tumbled material

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

Sea Glass (Frosted Quartz/Glass)

Amorphous Silicon Dioxide (SiO2)

Cobalt Glass Slug (Cullet)

Man-made Silicate Glass with Cobalt Oxide (CoO)

Goldstone (brown goldstone)

Man-made aventurine glass, typically copper-bearing silica glass

Glass

Amorphous Silicon Dioxide (SiO2)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Byproduct)

Sea Glass (Frosted Glass Fragment)

Amorphous Silica (Anthropogenic Sediment)

Green Glass Cullet / Recycled Glass

Amorphous Silicon Dioxide (SiO2) with various metal oxides

Goldstone (likely red/brown aventurine glass)

Man-made aventurine glass; copper-bearing silicate 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

Black obsidian (likely)

Volcanic glass; predominantly silica-rich, non-crystalline silicate glass

Green sea glass (likely bottle glass)

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

Green Sea Glass

Man-made vitreous material (silica glass)

Green sea glass (likely slag glass or bottle glass)

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

Opalite (likely imitation opal glass)

Man-made opalescent glass; not a natural mineral (often sold as opalite)

Libyan Desert Glass

Libyan Desert Glass (Impactite)