Man Made Glass Mineral Simulant

Chert Concretion

Chert (Microcrystalline Quartz, SiO2)

Black Obsidian

Amorphous volcanic glass (SiO2 + impurities)

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite/Goethite inclusions

Fluorite (Polished Point/Tower)

Calcium Fluoride (CaF2)

Polished silver sheen obsidian heart

Obsidian (volcanic glass), primarily rhyolitic silica-rich glass

Titanium Aura Quartz

Titanium bonded Silicon Dioxide (SiO2 + Ti)

Asphalt Concrete (Bituminous Pavement)

Aggregates in Bitumen Matrix

Aluminum Slag

Anthropogenic Aluminum (Al)

Aura Quartz (Titanium Quartz)

Titanium-coated Silicon Dioxide (SiO2 + Ti)

Ring with an Orange Inlay

N/A (Man-made object)

Concrete with Aggregate

Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)

Quartz crystal (likely clear quartz)

Quartz, silicon dioxide (SiO₂)

Titanium Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Sea Glass (specifically Frosted White)

Amorphous Silica (substance: Sodium-calcium silicate glass)

Tumbled milky chalcedony (likely common opalite-like quartz)

Chalcedony, microcrystalline SiO₂; possibly pale common opal, hydrated SiO₂·nH₂O

Sea Glass

Amorphous silicon dioxide (Man-made glass weathered by nature)

Aura Quartz

Titanium or Gold bonded Silicon Dioxide (SiO2)

Concretion (Sandstone)

Carbonate-cemented Sandstone Concretion

Felsic Drill Core (likely Gneiss or Granite)

Felsic Metamorphic Rock (Gneissic profile)

Blue Goldstone

Goldstone (artificial glass)

Sea Glass

Amorphous Silicon Dioxide (Man-made glass weathered by nature)

Green sea glass (likely slag glass or bottle glass)

Man-made soda-lime silicate glass; not a naturally occurring mineral

Aura Quartz (specifically Titanium Aura Quartz)

Titanium-coated Silicon Dioxide (SiO2 + Ti Coating)

Polished black pebble, likely basalt

Basalt, a fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Opalite

Synthetic Opalized Glass

Blue-dyed tumbled quartz or glass imitation

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

Polished dendritic agate or jasper

Microcrystalline quartz (SiO₂), likely chalcedony with iron/manganese dendrites

Blue sea glass or blue glassy mineral fragment

Uncertain; likely man-made soda-lime glass, not a natural mineral

Cubic Zirconia (Jewelry Setting)

Zirconium Dioxide (ZrO2)

Green glassy mineral fragment, possibly fluorite

Fluorite (calcium fluoride, CaF₂), tentative identification

Cobalt Glass Slug (Cullet)

Man-made Silicate Glass with Cobalt Oxide (CoO)

Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)

Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)

Titanium Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Slag Glass

SiO2 (Silicon Dioxide) with impurities

Goldstone (brown goldstone)

Man-made aventurine glass, typically copper-bearing silica glass

Goldstone (likely red/brown aventurine glass)

Man-made aventurine glass; copper-bearing silicate glass (not a natural mineral)

Concrete Fragment

Artificial Conglomerate (Cement and Aggregate)

Goldstone

Aventurine glass (Synthetic glass with copper inclusions)

Colorless faceted gemstone, likely glass or cubic zirconia

Probably cubic zirconia (zirconium dioxide, ZrO₂); diamond cannot be confirmed visually

Blue glassy fragment among beach gravel

Likely cobalt-blue man-made glass; not a natural mineral specimen

Concrete

Anthropogenic Conglomerate