Synthetic Polymer (Polylactic Acid)

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, ZrO₂ (synthetic zirconium dioxide); possibly synthetic glass or lab-grown diamond

White cabochon gemstone, likely milky chalcedony or opalite

Chalcedony: microcrystalline quartz, SiO₂; appearance may also indicate synthetic opalite glass

Polished hematite

Hematite (Fe₂O₃), likely a tumbled iron-oxide specimen

Dyed Agate Geode

Silicon Dioxide (SiO2) with artificial pigment

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

Polished hematite bead necklace

Hematite (iron(III) oxide, Fe₂O₃), likely polished beads

Clear Quartz (Faceted) / White Sapphire / Goshenite

Silicon Dioxide (SiO2) / Aluminium Oxide (Al2O3)

Red faceted gemstone jewelry setting

Likely synthetic ruby or red spinel centerpiece with colorless accent stones; exact identification requires gemological testing

Tumbled green beryl or glassy green gemstone

Likely beryl, Be₃Al₂Si₆O₁₈; possibly treated emerald or synthetic glass

Orange cabochon gemstone, likely amber or amber-like resin

Natural amber: fossilized plant resin (organic mineraloid), commonly succinite; exact identification requires testing

Ruby (Pink to Red Corundum)

Al2O3 (Corundum with Chromium impurities)

Ruby

Corundum (Al2O3 with Chromium traces)

Blue Sapphire

Corundum (Al2O3)

Tumbled Clear Quartz and Citrine Points

Silicon Dioxide (SiO2)

Diamond (or Diamond Simulant)

Carbon (C)

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Coal (Anthracite/Bituminous)

Carbo fossilium (primarily Carbon)

Diamond (or Cubic Zirconia simulant)

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

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

Sandstone (likely Fossilized Wood or Concrete Simulacrum)

Arenite / Silicified Wood / Anthropogenic Concrete

Amber

Succinicum (Succinite); C10H16O

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Amber

Succinite (fossilized tree resin)

Amber and Tumbled Stones

Fossilized Tree Resin (Succinite)

Amber

Succinite (fossilized resin)

Amber with Organic Inclusions

Succinite (fossilized resin)

Green faceted gemstone, likely tsavorite garnet

Tsavorite: green grossular garnet, Ca₃Al₂(SiO₄)₃

Green Obsidian Sphere (man-made glass)

Vitreous Silica with Chromium/Iron additives

Opalite (a synthetic glass)

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

Goldstone (Brown)

Aventurine Glass (Silicon Dioxide infused with Copper crystals)

Painted River Rock

Anthropogenic-modified Siliciclastic Sedimentary Rock

Dyed Agate

Chalcedony (SiO2)

Tumbled amethyst

Amethyst, purple quartz (SiO₂), colored by trace iron and irradiation

Tumbled amethyst

Quartz, crystalline silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Garden Quartz (Lodalite)

Silicon Dioxide with various mineral inclusions (SiO2)

Amber

Succinite (a specific common type) or Fossilized Tree Resin (C10H16O)

Amber

Succinite (fossilized tree resin)

Amber

Succinite (approximate formula C10H16O)

Green cabochon gemstone, likely aventurine or dyed chalcedony

Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony

Opalite

Synthetic Opalized Glass / Man-made Glass

Blue Goldstone

Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)