Man Made Object (Metalwork)

Tumbled milky quartz

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

Carved Mottled Greenish-Yellow Crystal/Glass Object

Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.

Man-made Metal Pin (Non-geological)

Antimony-Lead Alloy or Zinc/Brass Base with Electroplating

Pink quartz cabochon (likely rose quartz)

Quartz, SiO₂; pink coloration likely from trace elements or microscopic inclusions

Crescent Pebble

Weathered Quartzite or Sandstone Fragment

Opalite

Synthetic glass / Opalized glass

Diamond (or Simulant)

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

Note: Item is a Synthetic/Man-made Object

Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)

Dalmatian jasper

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

Polished black stone, likely black obsidian

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

ABS Plastic (Acrylonitrile Butadiene Styrene)

(C8H8)x·(C4H6)y·(C3H3N)z

Tumbled white chalcedony (likely milky quartz)

Chalcedony, microcrystalline quartz (SiO₂)

Opalite (likely man-made opalescent glass)

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

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Opalite (a synthetic glass)

Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant

Opalite

Synthetic glass (SiO2 + impurities)

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

Antiqued or Oxidized Metal Chain (often Steel or Brass)

Diamond

Native Carbon (C)

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

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Beads (likely glass or man-made material)

N/A (artificial material)

Polished brown jasper (likely brecciated or orbicular jasper)

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

Opalite

Synthetic glass / Opaque silicious glass

Opalite crescent pendant

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

Polished white chalcedony or quartz pendant

Microcrystalline quartz (chalcedony), SiO₂; exact identification is uncertain from the image

Opalite

Man-made opalescent glass

Opalite

Man-made opalized glass

Goldstone

Aventurine Glass (Man-made)

Sea Glass

Man-made silicate glass

Slag Glass

Amorphous Silicate (Man-made)

Goldstone (brown goldstone)

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

Possible obsidian or slag glass

Volcanic glass, primarily SiO₂; alternatively industrial iron-rich glassy slag

Polished black pebble, possibly obsidian

Volcanic glass (obsidian), likely; identification is tentative from the image

Polished milky quartz (likely quartz worry stone or wand)

Quartz, silicon dioxide (SiO₂)

Concrete Fragment

Artificial Conglomerate (Cement and Aggregate)

Diamond (or Simulant)

Carbon (C)

Polished labradorite sphere

Labradorite, calcic plagioclase feldspar ((Ca,Na)(Al,Si)₄O₈)

Red-orange cabochon, likely carnelian or glass imitation

Carnelian: chalcedony (microcrystalline SiO₂), commonly iron-colored

Metal Chain (Likely Steel or a Steel Alloy)

Steel (primarily iron and carbon); specific alloy unknown

Sea Glass

Silicon dioxide (mostly)

Black glassy fragment, likely obsidian or industrial glass

Volcanic glass (obsidian), chiefly amorphous SiO₂; identification uncertain from image