Anthropogenic (Man Made Material Processed By Nature)

Opalite (likely imitation opal glass)

Man-made opalescent glass; not a natural mineral (often sold as opalite)

Asphalt Chunk

Asphalt concrete

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Dyed Crackle Quartz (Green)

Quenching-treated Quartz (Silicon Dioxide, SiO2)

Opalite (likely man-made opalescent glass)

Opalite; not a true mineral, typically synthetic opalescent glass (silica-based)

Quartz pebble (Quartztite fragment)

Silicon Dioxide (SiO2)

Obsidian

Volcanic Glass

Sandstone (with concrete/human-made layer)

Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)

Cubic Zirconia (Simulated Diamond)

Cubic Zirconia (ZrO2)

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂), likely milky quartz

Green glass cabochon or tumbled stone

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

Likely tumbled or cut quartz/chalcedony fragment

Silicon dioxide (SiO₂), probably microcrystalline quartz or quartz

Aura Quartz (Titanium/Gold coated)

Silicon Dioxide (SiO2) with metallic vapor deposition

Polished labradorite sphere

Labradorite, calcic plagioclase feldspar ((Ca,Na)(Al,Si)₄O₈)

Green sea glass (likely bottle glass)

Man-made soda-lime silicate glass; not a natural mineral

Opalite

Synthetic Opalite Glass / Opalized Glass

Asphalt aggregate

Human-made bituminous asphalt containing crushed silicate rock aggregate

Goldstone

Aventurine Glass (Man-made glass with copper inclusions)

Polished brown jasper (likely brecciated or orbicular jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions

Crescent Pebble

Weathered Quartzite or Sandstone Fragment

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

Diamond / Clear Quartz / Glass paste

Carbon (Diamond) / Silicon Dioxide (Quartz)

Asphalt (Bituminous Concrete)

Composite material (bitumen binder with mineral aggregate)

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

Build-A-Bear Plush (Non-Geological)

Polyester fibers (C10H8O4)n and Synthetic Polymers

Bismuth

Bismuth (Bi)

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Goldstone

Aventurine Glass (SiO2 + Cu small inclusions)

Aura Quartz

Titanium/Titanium-Gold treated Silicon Dioxide (SiO2)

Red Slag Glass

Amorphous Silica (Industrial byproduct with metallic oxide dopants)

Black glassy fragment, likely obsidian or industrial glass

Volcanic glass (obsidian), chiefly amorphous SiO₂; identification uncertain from image

Faceted clear gemstone, likely quartz or glass imitation

Most likely quartz (SiO₂); exact identification requires refractive-index and hardness tests

Blue-dyed tumbled quartz or glass imitation

Quartz (SiO₂), appearance possibly enhanced with blue dye; identity uncertain from image

Asphalt concrete

Anthropogenic conglomerate

Pyrite in Quartz (Drill Core)

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions

Decorative mosaic cross containing mixed rock and glass fragments

Polychrome aggregate; likely quartz, feldspar, marble, granite, and assorted colored glass

Slag (Industrial Byproduct)

Anthropogenic Vitreous Silicate material

Opalite

Synthetic Opalite Glass (Silicon Dioxide)

Shale (Ferruginous)

Laminated Mudrock (Siliciclastic Sedimentary Rock)

Coquina

Bioclastic Limestone

Rounded graywacke or sandstone cobble

Lithified clastic sandstone; likely quartz–feldspar–lithic grain aggregate in a silica or calcite matrix