Man Made

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (SiO2) with metallic oxide impurities

Slag (Industrial Byproduct)

Artificial silicate/iron byproduct

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Man-made)

Blue-dyed tumbled quartz or glass imitation

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

Polished brown jasper (likely brecciated or orbicular jasper)

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

Sea Glass

Man-made vitreous material (silica glass)

Goldstone

Man-made glass infused with metallic copper

Opalite

Man-made Glass (Synthetic Opalized Glass)

Sea Glass

Man-made silicate glass weathering product

Opalite

Synthetic Glass / Man-made Opal Simulant

Goldstone

Avventurina (Man-made Glass with Copper inclusions)

Opalite

Synthetic Opalized Glass / Man-made Glass

Opalite

Man-made glass (traditionally simulated Opal)

Blue Goldstone

Man-made glass with cobalt and metal flecks

Opalite

Man-made Glass (Synthetic Opalized Glass)

Small black stone fragment (possibly obsidian)

Unidentified dark rock; obsidian is volcanic glass (composition typically rhyolitic)

Obsidian

Volcanic Glass

Goldstone

Man-made glass infused with copper crystals

Blue Sandstone

Man-made glass with cobalt and copper inclusions

Goldstone

Man-made glass containing cuprous oxide

Goldstone

Man-made glass infused with copper particles

Opalite-style glass pendant

Man-made opalescent glass (not natural opal)

Blue opalite glass cabochon (likely imitation opal)

Man-made opalescent glass; not a natural mineral

Opalite glass sphere (likely synthetic imitation)

Man-made opalescent glass; not natural opal

Opalite

Man-made Opalized Glass (Synthetic Glass)

Green Sea Glass

Man-made vitreous material (silica glass)

Metallic sulfide mineral fragment, likely galena

Galena (lead sulfide, PbS), tentative identification

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂), likely milky quartz

Clear quartz sphere

Quartz (silicon dioxide, SiO₂)

Concrete Fragment

Hardened Portland cement and mineral aggregate

Fluorite (Polished Point/Tower)

Calcium Fluoride (CaF2)

Clear quartz crystal (likely)

Quartz, silicon dioxide (SiO₂)

Polished dendritic agate or jasper

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

Faceted clear gemstone in a gold-colored setting

Unidentified transparent faceted stone; possibly quartz, glass, or another colorless gem

Concrete Paver (Artificial Cementitious Rock)

Hydrated Portland Cement Aggregate

Unidentifiable Rock Fragment

Asphalt Concrete (Bituminous Conglomerate)

Anthropogenic Bituminous Conglomerate

Blue opalescent glass-like gemstone (possibly imitation opalite)

Likely man-made opalite glass; composition varies, typically silica-based glass

Opalite-style pendant (likely synthetic glass, not natural opal)

Opalescent glass; commonly sold as “opalite” (not a recognized mineral species)

Red-orange jasper pebble (tentative)

Microcrystalline quartz, SiO₂, colored mainly by iron oxides

Note: This is a Man-Made Object (Costume/Prop Patch)

Synthetic fiber and pigments (Cellulose/Plastic-based composite)

Man-made Synthetic Material (Plastic/Composite)

Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)