Man Made Material (Metal)

Green glass-like mineral specimen, likely fluorite

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

Sandstone Concretion

Septarian or Carbonate-cemented Sandstone Concretion

Diamond (Cluster Ring)

Carbon (C)

Opalite

Synthetic opalescent glass

Aqua Aura Quartz

Silicon Dioxide (SiO2) bonded with Gold (Au)

Goldstone

Aventurine glass

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

Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components

Diamond-set letter “L” jewelry piece

Diamond (crystalline carbon, C) set in a metal mount; the metal is not identifiable from the image

Cobalt Glass Slug (Cullet)

Man-made Silicate Glass with Cobalt Oxide (CoO)

Goldstone

N/A (Synthetic Glass with Copper Inclusions)

Man-made Crystal (Lead Glass)

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

Porcelain Tile (Sandstone-look)

Man-made Ceramic (resembling Quartz-rich Sandstone)

Sea Glass

Man-made silicate glass (Amorphous silicon dioxide)

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Green Aura Quartz (Titanium treated Kyanite or Quartz)

Silicon Dioxide (SiO2) or Aluminum Silicate (Al2SiO5) with Titanium/Metal Oxide coating

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Opalite

Synthetic Opalite Glass

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Cherry Quartz

SiO2 (Silicon Dioxide with iron-rich inclusions/dye)

Aventurine Quartz

Silicon Dioxide (SiO2) with Fuchsite inclusions

Moldavite

Tektite (Impact Glass), ~80% SiO2 + Al2O3

Green Slag

Anthropogenic Silicate Glass

Bismuth

Bismuth (Bi)

Brick

Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)

Pearl-embellished decorative cross

Pearl (biogenic calcium carbonate, predominantly aragonite) with rhinestone-mounted glass or synthetic gemstones

Sandstone (with man-made markings)

Arenite (composed primarily of Quartz, SiO2)

Sunstone

Andesine-Labradorite Feldspar ((Ca,Na)(Al,Si)4O8)

Green gemstone ring (likely synthetic or imitation emerald)

Possibly emerald, beryl (Be₃Al₂Si₆O₁₈); the photo cannot confirm the center stone’s identity or whether it is natural.

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

Opalite

Synthetic Opalised Glass

Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Tumbled opalite (likely man-made glass)

Opalite, a trade name for opalescent glass; not natural opal

Tumbled opalite (likely synthetic glass)

Opalite; typically man-made opalescent soda-lime glass, not a recognized mineral species

Blue goldstone

Man-made aventurine glass containing metallic copper particles; not a natural mineral

Likely polished quartz or glass-like mineral cabochon

Probably quartz (SiO₂), though the image cannot exclude man-made glass

Small stud earring with a purple gemstone (possibly amethyst)

Possible amethyst, a purple variety of quartz (SiO₂); identification is uncertain from the image

Milky quartz (rough quartz fragment)

Quartz, silicon dioxide (SiO₂)

Chert Concretion

Chert (Microcrystalline Quartz, SiO2)

Crescent Pebble

Weathered Quartzite or Sandstone Fragment

Likely blue glass or synthetic gemstone jewelry

Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass

Polished dendritic agate cabochon (likely agate or jasper)

Microcrystalline quartz, SiO₂, commonly chalcedony with iron-oxide inclusions

Titanium Coated Aura Quartz (Apple Aura Quartz)

Silicon Dioxide (SiO2) with Metallic Vapor Deposition Coating