Man Made Object (Simulant)

Diamond (or Cubic Zirconia simulant)

Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ

Obsidian

Volcanic Glass

ABS Plastic (Acrylonitrile Butadiene Styrene)

(C8H8)x·(C4H6)y·(C3H3N)z

N/A - Man-made object (Jewelry Chain)

Antiqued or Oxidized Metal Chain (often Steel or Brass)

Opalite (likely imitation opal glass)

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

Opalite (likely man-made opalescent glass)

Opalite; not a true mineral, typically synthetic opalescent glass (silica-based)

Opalite

Synthetic glass (SiO2 + impurities)

Crescent Pebble

Weathered Quartzite or Sandstone Fragment

Opalite

Man-made opalescent glass

Dalmatian jasper

Porphyritic microcrystalline quartz-rich rock, commonly sold as Dalmatian jasper; spots are chiefly arfvedsonite/amphibole minerals, sometimes altered feldspar

Diamond

Native Carbon (C)

Polished black stone, likely black obsidian

Volcanic glass; predominantly rhyolitic silica glass (SiO₂-rich)

Sea Glass

Man-made silicate glass

Sea Glass

Man-made silicate glass

Sea Glass

Man-made silicate glass

Sea Glass

Man-made silicate glass

Blue Obsidian (Cullet Glass)

Man-made silicate glass

Sea Glass

Man-made silicate glass

Opalite

Man-made opalized glass

Goldstone

Aventurine Glass (Man-made)

Sea Glass

Man-made silicate glass

Slag Glass

Amorphous Silicate (Man-made)

Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)

Silicon Dioxide (SiO2) with inclusions/dye

Unidentified gray metallic object

Not determinable from the image; likely a metal screw or manufactured fastener rather than geological material

Goldstone beads (likely brown goldstone)

Man-made copper-bearing glass; not a natural mineral. Often sold as “aventurine glass.”

Tumbled white chalcedony (likely milky quartz)

Chalcedony, microcrystalline quartz (SiO₂)

Sea Glass

Amorphous silicon dioxide

Opalite

Synthesized glass / Silicon dioxide

Opalite

Synthetic glass / Opaque silicious glass

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.

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Opalite crescent pendant

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

Beads (likely glass or man-made material)

N/A (artificial material)

Diamond ring

Diamond, crystalline carbon (C), set in a gold-colored metal ring

Diamond (likely) in an antique gold ring

Diamond, crystalline carbon (C)

Opalite

Synthetic Opalite Glass / Opalized Glass

Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)

Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Polished brown jasper (likely brecciated or orbicular jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions

Small pebble, likely limestone

Unidentified carbonate pebble, possibly micritic limestone (calcite, CaCO₃)

Polished gemstone tower assortment

Primarily quartz varieties and simulants; apparent amethyst (SiO₂), rose quartz (SiO₂), clear quartz (SiO₂), fluorite (CaF₂), sodalite, malachite, and possibly dyed or composite stones

Goldstone (brown goldstone)

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