Man Made Byproduct (Non Geological)

Titanium Aura Quartz

Titanium bonded Silicon Dioxide (SiO2 + Ti)

Opalite (Man-made Glass)

Fused glass (typically made of dolomite and metal opacifiers)

Green sea glass or tumbled green quartz (uncertain)

Likely quartz (SiO₂) if natural; alternatively man-made soda-lime glass

Obsidian

Volcanic Glass (Amorphous Silicon Dioxide)

Polished black pebble, possibly obsidian

Volcanic glass (obsidian), likely; identification is tentative from the image

Blue Goldstone

Auraventurine (Synthetic glass with cobalt and copper inclusions)

Quartz crystal (likely clear quartz)

Quartz, silicon dioxide (SiO₂)

Aura Quartz (Titanium Quartz)

Titanium-coated Silicon Dioxide (SiO2 + Ti)

Baked-clay ceramic fragment (likely brick or pottery)

Fired clay, primarily aluminosilicate minerals; not a natural rock

Blue opal heart cabochon

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

Opalite

Synthetic Glass (Simulated Opal)

Asphalt / Road Aggregate

Bituminous Conglomerate (synthetic)

Aura Quartz

Titanium or Gold bonded Silicon Dioxide (SiO2)

Synthetic Costume Accessory (Non-Geological)

Polyester and Acrylic Fiber (Anthropogenic polymer)

Sandstone Concretion

Clastic Sedimentary Rock (primarily SiO2 with mineral cement)

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Green sea glass (likely bottle glass)

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

Concrete

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

Aura Quartz (specifically Titanium Aura Quartz)

Titanium-coated Silicon Dioxide (SiO2 + Ti Coating)

Tumbled gray stone, likely quartz-rich pebble

Probable microcrystalline quartz/chalcedony (SiO₂), possibly gray jasper or quartzite

Asphalt (Bituminous Concrete)

Composite material (bitumen binder with mineral aggregate)

Opalite

Synthetic Opalized Glass

Opalite

Synthetic Glass (Amorphized Silicon Dioxide)

Asphalt Concrete (Bituminous Pavement)

Aggregates in Bitumen Matrix

Vesicular basalt (probable iron-rich volcanic rock)

Basalt; chiefly plagioclase, clinopyroxene, olivine, and Fe-Ti oxides

Red-orange cabochon, likely carnelian or glass imitation

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

Chert (Chalky Flint Node)

Chert (Microcrystalline Quartz, SiO2)

Slag

Ferrous Slag (Siliceous industrial waste)

Rainbow Hematite Ring

Iron(III) oxide (Fe2O3) with thin-film coating

Concrete with Aggregate

Artificial Conglomerate (Cement and Aggregate)

Tumbled black stone, likely black obsidian

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

Blue Goldstone

Man-made glass with cobalt and metal flecks

Raw quartz crystal

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

White pebble, likely quartz or calcite

Indeterminate from image; possible microcrystalline quartz (SiO₂) or calcite (CaCO₃)

Polished blue glassy mineral specimen, likely sodalite or blue aventurine

Most consistent with sodalite (Na₈Al₆Si₆O₂₄Cl₂), though dyed quartzite or blue glass cannot be excluded from the photograph

Cubic Zirconia (Jewelry Setting)

Zirconium Dioxide (ZrO2)

Diamond

Native Carbon (C)

Conglomerate

Conglomerate (clastic sedimentary rock)

Iron Slag

Ferrous Slag (Industrial Byproduct)

Red glassy gemstone, possibly garnet

Unidentified red transparent material; garnet group (X₃Y₂(SiO₄)₃) is a possibility

Blue Goldstone

Synthetic glass with cobalt and copper inclusions

Cubic Zirconia (Jewelry Setting)

Cubic Zirconia (ZrO2)