Man Made Material (Anthropogenic 'Mineraloid')

Synthetic Convention Badge (Plastic/PVC)

Polyvinyl Chloride (PVC) / Polycarbonate

Chert (often called Flint in archaeological contexts)

Microcrystalline or cryptocrystalline Silica (SiO2)

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

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

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Titanium Amethyst Geode

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

Blue goldstone beads

Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli

Green glass sphere/marble

Soda-lime glass (primarily SiO2, Na2O, CaO)

Hematite

Iron(III) oxide (Fe2O3)

Terrazzo (with Marble and Granite fragments)

Cementitious or resinous composite containing Calcium Carbonate (CaCO3) and Silicates

Polished green-and-black banded cabochon (likely malachite imitation or dyed agate)

Uncertain; possible malachite (Cu₂CO₃(OH)₂), banded agate (SiO₂), or man-made glass

Dyed Blue Agate (Dragon Vein Agate)

Silicon Dioxide (SiO2) with artificial cobalt/organic dyes

Diamond

Native Carbon (C)

Granite with Cupules / Bedrock Mortars

Granite (felsic intrusive plutonic rock)

Carved Stone Turtle

Carved Soapstone and Quartz

Small clear crystal, possibly quartz or glass-like gemstone

Uncertain; likely quartz (SiO₂), but the image is insufficient to exclude man-made glass or cubic zirconia

Chert (Arrowhead/Projectile Point)

Microcrystalline quartz (SiO2)

Slag (Industrial By-product)

Anthropogenic Vitreous Silica/Iron Silicate

Raw quartz crystal

Quartz (silicon dioxide, SiO₂), likely milky or included quartz

Iron Slag

Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)

Metallic sulfide mineral fragment, likely galena

Galena (lead sulfide, PbS), tentative identification

Blue tumbled glass-like specimen; likely blue slag glass

Likely man-made glass (silicate glass), not a natural mineral; exact material cannot be confirmed from the image

Chert (Arrowhead Artifact)

Microcrystalline Quartz (SiO2)

Opalite

Synthetic Opalised Glass

Carborundum (Silicon Carbide)

Silicon Carbide (SiC) / Moissanite (natural form)

Common opal in iron-stained host rock

Opal (hydrated amorphous silica, SiO₂·nH₂O), likely common opal

Chert (Arrowhead/Tool variety)

Microcrystalline Quartz (SiO2)

Likely clear quartz crystal or glass-like gemstone

Quartz, silicon dioxide (SiO₂); exact identification is uncertain from the strongly magenta-lit image

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Obsidian

Obsidian (volcanic glass)

Iron-rich slag or weathered ironstone fragments

Probably hematite–goethite material; possibly industrial iron slag (Fe₂O₃/FeO(OH))

Colorless faceted quartz-like gemstone

Likely quartz (SiO₂), though the appearance may also indicate man-made glass or cubic zirconia

Chert Arrowhead

Microcrystalline Quartz (SiO2)

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

Aventurine

Quartz containing inclusions of Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Tumbled black stone, likely black obsidian

Obsidian; volcanic glass, typically rhyolitic composition (SiO₂-rich)

Mixed beach-stone and tumbled-glass collection

Predominantly uncertain rocks (likely basalt, granite, and quartz-bearing stones) with anthropogenic glass; one possible banded agate or jasper

Rainbow Hematite (Man-made/Treated)

Tumbled Hematite with Titanium/Anodized coating (Iron(III) oxide, Fe2O3)

Man-made Blank Ammunition (Brass)

CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)

Green Agate

Silicon dioxide (SiO₂)

Man-made Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating/dye

Mystic Topaz

Aluminum silicate fluoride hydroxide with titanium coating (Al2SiO4(F,OH)2)

Blue glassy fragment among beach gravel

Likely cobalt-blue man-made glass; not a natural mineral specimen