Man Made Material (Jewelry, Metal Alloy)

Opalite

Man-made opalescent glass

Blue Slag Glass

Man-made Silicon Dioxide (Amorphous)

Concrete with Exposed Aggregate

Anthropogenic conglomerate (Concrete)

Asphalt Concrete

Bituminous Concrete (Anthropic Rock)

Concrete Paver (Artificial Cementitious Rock)

Hydrated Portland Cement Aggregate

Beryl

Beryllium Aluminum Silicate (Be3Al2(SiO3)6)

Rose Gold (Copper-Gold Alloy)

Aurum-Cuprum Alloy (Au-Cu)

Titanium Amethyst Geode

Silicon Dioxide (SiO2) with Titanium/Metal Vapor Deposition Layer

Black-and-white agate geode pendant

Agate (microcrystalline quartz, SiO₂), likely a hollow geode slice with chalcedony and drusy quartz

Native Platinum

Platinum (Pt)

Blue Goldstone

Man-made glass infused with copper crystals

Tumbled black stone, likely black obsidian

Obsidian (volcanic glass; chiefly silica-rich rhyolitic composition)

Blue opalite glass (likely man-made)

Opalite glass; a silica-based amorphous glass, not natural opal

Obsidian

Volcanic Glass

Bismuth

Native Bismuth (Bi)

Asphalt Concrete

Bituminous Concrete

Opalite (a synthetic glass)

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

Small pebble, likely limestone

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

Tumbled gray stone, likely quartz-rich pebble

Probable microcrystalline quartz/chalcedony (SiO₂), possibly gray jasper or quartzite

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Sea Glass

Silicon dioxide (mostly)

Blue Obsidian

Volcanic Glass (Amorphous)

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial byproduct)

White pebble, likely quartz or calcite

Indeterminate from image; possible microcrystalline quartz (SiO₂) or calcite (CaCO₃)

Slag Glass (Cullet)

Amorphous Silica (man-made), primarily SiO2 with trace metal oxides

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

Concrete / Conglomerate (Man-made)

Artificial Conglomerate (Cementitious Composite)

Faceted clear gemstone ring, likely white sapphire or diamond

Unidentified colorless gemstone; diamond (C) or sapphire (Al₂O₃) cannot be distinguished from the image

Glass

Amorphous Silicon Dioxide (SiO2)

Clear-stone silver-tone teardrop earring

The stones may be colorless quartz or glass; the image does not allow reliable identification. Metal setting appears silver-tone.

Gemstone cocktail ring, likely jade and quartz or glass beads

Possible jadeite (NaAlSi₂O₆) or nephrite (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂); the peach-colored beads cannot be reliably identified from the image

Blue glassy gemstone cabochon, likely dyed chalcedony or glass

Uncertain; possible dyed chalcedony (microcrystalline quartz, SiO₂)

Red faceted gemstone ring

Likely synthetic ruby or red spinel; exact identification requires testing

Chert (Chalky Flint Node)

Chert (Microcrystalline Quartz, SiO2)

Likely tumbled red mineral or glass imitation

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

Diamond (or Simulant)

Carbon (C)

Aura Quartz (Anomalously Coated Quartz)

Silicon Dioxide (SiO2) treated with vaporized metals

Concrete fragment or Conglomerate

Artificial Conglomerate (Concrete) or Natural Conglomerate

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Hematite

Iron(III) oxide (Fe2O3)

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)