Man Made Material (Metal)

Opalite

Synthetic Opalised Glass

Blue Goldstone

Synthetic Avanturine Glass (or Aventurine Glass)

Metallic sulfide mineral fragment, likely galena

Galena (lead sulfide, PbS), tentative identification

Asphalt Concrete (Bituminous Pavement)

Aggregates in Bitumen Matrix

ABS Plastic (Acrylonitrile Butadiene Styrene)

(C8H8)x·(C4H6)y·(C3H3N)z

Concrete / Anthropogenic Conglomerate

Man-made composite material (Portland cement, aggregate, and water)

Concrete fragment with Aggregate

Anthropogenic Concrete with Calcarious and Siliceous Aggregate

Asphalt (Road Aggregate)

Asphalt concrete / Bituminous mixture

Aggregate Concrete

Anthropogenic Conglomerate (Technosol)

Native Silver

Silver (elemental Ag)

Terrazzo (Man-made Composite)

Cementitious or Resin-bound Lithic Composite

Opalite

Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Man-made)

Asphalt Concrete

Bituminous Concrete (Anthropic Rock)

Beaded gemstone bracelet

Indeterminate; likely small polished mineral beads, possibly turquoise or dyed stone, with metal and glass components

Concrete with Exposed Aggregate

Anthropogenic conglomerate (Concrete)

Titanium Amethyst Geode

Silicon Dioxide (SiO2) with Titanium/Metal Vapor Deposition Layer

Concrete Paver (Artificial Cementitious Rock)

Hydrated Portland Cement Aggregate

Tumbled black stone, likely black obsidian

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

Beads (likely glass or man-made material)

N/A (artificial material)

N/A - Man-made object (Jewelry Chain)

Antiqued or Oxidized Metal Chain (often Steel or Brass)

Blue Goldstone

Man-made glass with suspended copper, cobalt, or manganese particles

Polymer Clay (Mock Mineral)

Polyvinyl chloride (PVC) with plasticizers and pigment

Concrete / Conglomerate (Man-made)

Artificial Conglomerate (Cementitious Composite)

Asphalt Concrete

Bituminous Concrete

White pebble, likely quartz or calcite

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

Blue Slag Glass

Man-made Silicon Dioxide (Amorphous)

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Chert (Chalky Flint Node)

Chert (Microcrystalline Quartz, SiO2)

Blue Goldstone

Goldstone (artificial glass)

Concrete fragment or Conglomerate

Artificial Conglomerate (Concrete) or Natural Conglomerate

Opaline Glass (Opalite)

Synthetic Silicon Dioxide Glass

Blue glass-like bead or gemstone keychain ornament

Indeterminate; likely cobalt-blue glass or synthetic blue spinel, not identifiable as a natural mineral from the image

Likely tumbled red mineral or glass imitation

Indeterminate; possibilities include red jasper (microcrystalline quartz, SiO₂) or dyed chalcedony

Lava Rock with Fabric Impression

Scoria or Basalt with anthropogenic impressions

Red cabochon gemstone ring (likely glass or synthetic stone)

Undetermined; the image does not establish a natural mineral identity

Slag Glass (Cullet)

Amorphous Silica (man-made), primarily SiO2 with trace metal oxides

Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)

Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)

Gemstone ring (stones not reliably identifiable from the image)

Likely faceted yellow stones and clear stones set in a metal band; species and treatments are indeterminate visually

Green Sea Glass

Man-made vitreous material (silica glass)

Sandstone-based Concrete Fragment

Cementitious Composite with Sedimentary Aggregate

Concrete

Hydrated Portland Cement Aggregate Composite