Mineral (Man Made Glass)

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

Ferro-silicate Slag

Industrial Vitrified Slag (High-silica amorphous glass)

Blue opal heart cabochon

Common opal, hydrated amorphous silica (SiO₂·nH₂O), likely blue-dyed or synthetic opalite

Pink Cubic Zirconia (CZ)

Zirconium Dioxide (ZrO2)

Blue glassy mineral specimen, possibly dyed or synthetic

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

Titanium Coated Kyanite (Aura Kyanite)

Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating

Concrete

Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)

Acrylic or Resin (Synthetic Imitation)

Polymethyl Methacrylate (PMMA) or Polyepoxide

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Hematite

Iron(III) oxide (Fe2O3)

Polished black stone, likely black obsidian

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

Sandstone (with man-made markings)

Arenite (composed primarily of Quartz, SiO2)

Slag

Glassy silicate byproduct (anthropogenic material)

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) with polymer resins

Cherry Quartz

SiO2 (Silicon Dioxide with iron-rich inclusions/dye)

Tumbled opalite (likely synthetic glass)

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

Black beaded bracelet, likely black onyx or glass

Possibly chalcedony (microcrystalline quartz, SiO₂); the beads may instead be man-made glass

Blue-green cabochon, likely chalcedony or treated glass imitation

Cryptocrystalline quartz (chalcedony/possibly chrysoprase); identification uncertain from image

Green Glass (often marketed as 'Obsidian' or 'Green Quartz')

Amorphous Silica (SiO2) with copper or chromium additives

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Bismuth

Bismuth (Bi)

Green glass cabochon or tumbled stone

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

Goldstone (with Tiger's Eye and Quartz)

Aventurine glass (Synthetic SiO2 with Cu inclusions)

Carved Mottled Greenish-Yellow Crystal/Glass Object

Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.

Zinc Alloy (Silver-plated)

Zinc Alloy Casting (Zn-Al-Mg-Cu)

Diamond / Clear Quartz / Glass paste

Carbon (Diamond) / Silicon Dioxide (Quartz)

Sandstone Concretion

Septarian or Carbonate-cemented Sandstone Concretion

Concrete fragment with Aggregate

Anthropogenic Concrete with Calcarious and Siliceous Aggregate

Blue goldstone beads

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

Chert (Chalky Flint Node)

Chert (Microcrystalline Quartz, SiO2)

Slag

Metallurgical by-product

Rainbow Hematite (Titanium Coated)

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

Green Sea Glass

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

Sandstone (with concrete/human-made layer)

Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)

Asphalt (Road Aggregate)

Bituminous Conglomerate / Asphalt Concrete

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

Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components

Concrete

Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)

Boxwork or Septarian Concretion

Septarian nodule / Boxwork weathering

Slag (Industrial Glass/Glassy Rock)

Anthropogenic Vitreous Material

Slag

Metallurgical Slag

Concrete / Anthropogenic Conglomerate

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

Mystic Topaz

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