Mineral (Man Made Glass)

Goldstone (with Tiger's Eye and Quartz)

Aventurine glass (Synthetic SiO2 with Cu inclusions)

Slag

Metallurgical Slag

Rainbow Hematite (Titanium Coated)

Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating

Sandstone (with concrete/human-made layer)

Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)

Boxwork or Septarian Concretion

Septarian nodule / Boxwork weathering

Concrete

Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)

Concrete / Anthropogenic Conglomerate

Man-made composite material (Portland cement, aggregate, and water)

Blue glassy mineral specimen, possibly dyed or synthetic

Uncertain; possible blue fluorite (CaF₂), dyed chalcedony, or man-made glass

Diamond / Clear Quartz / Glass paste

Carbon (Diamond) / Silicon Dioxide (Quartz)

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Mystic Topaz

Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Conglomerate

Conglomerate (clastic sedimentary rock)

Aventurine

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

Concrete / Conglomerate (Man-made)

Artificial Conglomerate (Cementitious Composite)

Cubic Zirconia (Jewelry Setting)

Cubic Zirconia (ZrO2)

Man-made earbud charging case (Not a rock or mineral)

Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components

Slag (Industrial Glass/Glassy Rock)

Anthropogenic Vitreous Material

Conglomerate

Clastic Sedimentary Rock (Conglomerate)

Aqua Aura Quartz

Silicon Dioxide (SiO2) bonded with Gold (Au)

Concrete rubble

Anthropogenic conglomerate

Green glass cabochon or tumbled stone

Indeterminate; likely man-made glass, possibly aventurine glass rather than a natural mineral

Tumbled opalite (likely synthetic glass)

Opalite; typically man-made opalescent soda-lime glass, not a recognized mineral species

Lava Rock with Fabric Impression

Scoria or Basalt with anthropogenic impressions

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Ferro-slag (Leland Blue/Slag Glass)

Anthropogenic Vitreous Silica (Industrial Slag)

Concrete fragment or Conglomerate

Artificial Conglomerate (Concrete) or Natural Conglomerate

Blue goldstone beads

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

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Green Sea Glass

Amorphous Silica (man-made glass), SiO2 + additive metal oxides

Red-orange cabochon, likely carnelian or glass imitation

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

Pyrite Concretion (Grapestone)

Iron Sulfide (FeS2) Concretion

Concrete with Exposed Aggregate

Anthropogenic conglomerate (Concrete)

Polished obsidian

Volcanic glass; predominantly rhyolitic SiO₂

Porcelain (White Ceramic)

Mullite-bearing Vitrified Ceramic (Major phases: Mullite Al6Si2O13, Glassy Silica SiO2)

Cubic Zirconia (Simulated Diamond)

Cubic Zirconia (ZrO2)

Blue Impression Jasper beads

Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions

Pink Tumbled Quartz (Dyed)

Silicon Dioxide (SiO2)

Dyed Crackle Quartz (Green)

Quenching-treated Quartz (Silicon Dioxide, SiO2)

Blue chalcedony (likely dyed or treated)

Microcrystalline quartz, SiO₂ (chalcedony)

Sandstone Anvil / Nutting Stone

Quartzose Sandstone (Sedimentary Rock)

Aura Quartz (Titanium/Gold coated)

Silicon Dioxide (SiO2) with metallic vapor deposition