Man Made Mineral Simulant (Glass)

Blue Goldstone

Man-made glass with suspended copper, cobalt, or manganese particles

Jade bangle

Likely nephrite jade (actinolite–tremolite amphibole); possibly jadeite

Exposed Aggregate Concrete (Pea Gravel)

Concrete with Siliceous Alluvial Gravels

Clear Quartz (Faceted)

SiO2 - Silicon Dioxide

Asphalt (Bituminous Concrete)

Bituminous mix containing aggregates and petroleum-based binder (CnH2n+2)

Ocean Jasper Mushroom

Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)

Aura Quartz (Titanium-coated Quartz)

Silicon Dioxide (SiO2) with metallic vapor coating

Dyed or synthetic turquoise-blue glass-like specimen

Likely man-made colored glass or resin; exact identification requires testing

Ironstone Concretion (Pot Stone)

Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)

Possible sea glass (naturally frosted glass), not a confirmed geological specimen

Man-made silicate glass; composition varies, commonly soda-lime glass

Bouncy Ball (Synthetic Rubber Polymer)

Polybutadiene / Ethylene Vinyl Acetate (EVA)

Red-orange jasper pebble (tentative)

Microcrystalline quartz, SiO₂, colored mainly by iron oxides

Blue Sapphire (Synthetic or Man-made Glass Imitation)

Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic

Likely polished quartz or glass-like mineral cabochon

Probably quartz (SiO₂), though the image cannot exclude man-made glass

Iron Slag

Iron/Steel Slag (Ferrosilicate Glass)

Blue Goldstone

Aventurine Glass

Clear gemstone earring (likely cubic zirconia)

Cubic zirconia (synthetic zirconium dioxide, ZrO₂); identification from the image is uncertain

Goldstone (aventurine glass)

Man-made copper-bearing glass; not a natural mineral (commonly sold as blue/brown goldstone)

Aura Quartz Geodes (Lab-Altered)

Silicon Dioxide (SiO2) with Metallic Vapor Deposition

Opalite

Synthetic Glass (Simulated Moonstone/Opal)

Sandstone Concretion

Siliciclastic Concretion

Asphalt Concrete (Bituminous Concrete)

Bituminous aggregate

Cobalt Glass Slug (Man-made Glass)

Amorphous Silica with Cobalt Oxide (SiO2 + CoO)

Bismuth Crystal

Bismuth (Bi)

Aura Rose Quartz

SiO2 (Silicon Dioxide with Titanium/Gold coating)

Opalite

Synthetic Glass, SiO2 base with metallic inclusions

Small clear faceted gemstone, possibly cubic zirconia

Unconfirmed; cubic zirconia (ZrO₂) is a possibility, but diamond or another colorless stone cannot be identified from this image alone

Concrete Fragment

Hardened Portland Cement Composite

Dyed Imperial Jasper (Sea Sediment Jasper)

Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Crackle Agate / Dyed Quartz

SiO2 (Silicon Dioxide)

Blue Apatite

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

Blue Goldstone

Synthetic Avanturine Glass (or Aventurine Glass)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)

Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)

Polished white chalcedony or quartz pendant

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

Diamond ring

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

Blue obsidian-like volcanic glass

Volcanic glass, chiefly silica-rich amorphous material (composition uncertain)

Cullet Glass (Man-made Glass Slag)

Amorphous Silica (SiO2) with chemical additives

Fossiliferous limestone with colonial coral

Calcite (CaCO₃) limestone containing fossil tabulate or rugose coral colonies

Opalite

Synthetic Opalised Glass

Sandstone Concretion

Clastic Sedimentary Concretion (SiO2 with Iron Oxide)