Man Made Material (Metal)

Glass

Amorphous Silicon Dioxide (SiO2)

Conglomerate

Conglomerate (Sedimentary rock containing rounded clasts)

Red glassy gemstone, possibly garnet

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

Blue gemstone cross pendant

Likely faceted blue topaz (Al₂SiO₄(F,OH)₂); identification is uncertain from the image

Asphalt (Bituminous Pavement)

Bituminous mix (Aggregates with Bitumen binder)

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

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

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

Sea Glass

Man-made vitreous material (silica-based glass)

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

Green glass sphere/marble

Soda-lime glass (primarily SiO2, Na2O, CaO)

Tumbled gray stone, likely quartz-rich pebble

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

Blue glassy gemstone cabochon, likely dyed chalcedony or glass

Uncertain; possible dyed chalcedony (microcrystalline quartz, SiO₂)

Small pebble, likely limestone

Unidentified carbonate pebble, possibly micritic limestone (calcite, CaCO₃)

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial byproduct)

Blue slag glass or dyed glass-like industrial material

Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Decorative gemstone bracelet or jewelry

Unidentifiable from the blurred image; likely colored glass or synthetic stones, possibly mixed gemstone beads

Asphalt Chunk (Bituminous Concrete)

Aggregated Bitumen / Artificial Breccia

Iron-rich slag or ironstone; appearance is not diagnostic

Likely iron-oxide-rich material (hematite, Fe₂O₃, and/or magnetite, Fe₃O₄); possibly smelting slag

Hematite

Iron(III) oxide (Fe2O3)

Faceted clear gemstone ring, likely white sapphire or diamond

Unidentified colorless gemstone; diamond (C) or sapphire (Al₂O₃) cannot be distinguished from the image

Likely clear quartz pebble or glassy quartz fragment

Quartz (silicon dioxide, SiO₂)

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Mother of Pearl (Nacre)

Aragonite (CaCO3) with Organic Matrix

Obsidian

Volcanic Glass

Blue Obsidian

Volcanic Glass (Amorphous)

Diamond (or Simulant)

Carbon (C)

Blue Goldstone

Man-made glass infused with copper crystals

Clear quartz fragment

Quartz (silicon dioxide, SiO₂)

Carnelian cabochon

Orange-red variety of chalcedony (microcrystalline quartz), SiO₂

Synthetic Resin / Plastic Figurine

Synthetic Polymer (Copolymer of Polyethylene or Resin)

Bouncy Ball (Synthetic Rubber Polymer)

Polybutadiene / Ethylene Vinyl Acetate (EVA)

Fossiliferous limestone with colonial coral

Calcite (CaCO₃) limestone containing fossil tabulate or rugose coral colonies

Blue opalite glass (likely man-made)

Opalite glass; a silica-based amorphous glass, not natural opal

Sea Glass

Silicon dioxide (mostly)

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Blue glassy-looking specimen, possibly dyed or coated mineral

Not identifiable from the photograph; possibilities include dyed quartz or glassy slag, but composition cannot be established visually.

Aura Quartz (Anomalously Coated Quartz)

Silicon Dioxide (SiO2) treated with vaporized metals

Cultured Marble (Synthetic)

Polymer-matrix composite (typically calcium carbonate in polyester resin)

Asphalt Chunk

Asphalt concrete

Concrete with Aggregate

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

Painted River Rock

Artificially Coated Sedimentary Rock