Not A Rock (Man Made Industrial Metal)

Concrete rubble

Anthropogenic conglomerate

Opalite

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

Slag Glass (Cullet)

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

Aura Quartz (specifically Titanium Aura Quartz)

Titanium-coated Silicon Dioxide (SiO2 + Ti Coating)

Blue Slag Glass

Man-made Silicon Dioxide (Amorphous)

Opalite

Synthetic Opalized Glass

Aura Quartz Geodes (Lab-Altered)

Silicon Dioxide (SiO2) with Metallic Vapor Deposition

Opalite

Man-made Glass (Synthetic Opalized Glass)

Opalite (Man-made Glass)

Fused glass (typically made of dolomite and metal opacifiers)

Titanium Coated Kyanite (Aura Kyanite)

Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating

Opalite

Synthetic Glass (Hydrated Silica Simulant)

Sandstone-based Concrete Fragment

Cementitious Composite with Sedimentary Aggregate

Concrete / Conglomerate (Man-made)

Artificial Conglomerate (Cementitious Composite)

Aura Quartz (Titanium/Gold coated)

Silicon Dioxide (SiO2) with metallic vapor deposition

Possible weathered basalt or slag fragment

Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image

Bouncy Ball (Synthetic Rubber Polymer)

Polybutadiene / Ethylene Vinyl Acetate (EVA)

Diamond

Native Carbon (C)

Opalite

Synthetically produced glass (Silicon Dioxide with metallic inclusions)

Polymictic conglomerate or breccia (possibly concrete-like aggregate)

Lithified polymictic gravel; clasts may include basalt, granite, quartzite, and other silicates

Goldstone (aventurine glass)

Man-made copper-bearing glass; not a natural mineral (commonly sold as blue/brown goldstone)

Diamond Druzy (Crystalline Diamond)

Carbon (C)

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

Slag (Industrial Glass/Glassy Rock)

Anthropogenic Vitreous Material

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

Small pebble, likely limestone

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

Artificial Rock Face (Faux Rock)

Glass Fiber Reinforced Concrete (GFRC)

Slag Glass

Amorphous Silicate (Man-made)

Blue slag glass or dyed glass-like industrial material

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

Blue slag glass / industrial smelter slag

Man-made iron-rich silicate slag; composition variable, commonly Fe–Ca–Mg–Al silicates with glassy phases

Blue Goldstone

Aventurine Glass

Opalite

Man-made Synthetic Glass (Silicon Dioxide with metal additives)

Aura Rose Quartz

SiO2 (Silicon Dioxide with Titanium/Gold coating)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Polymer Clay (Mock Mineral)

Polyvinyl chloride (PVC) with plasticizers and pigment

Diamond (or Simulant)

Carbon (C)

Green Sea Glass

Amorphous Silica (man-made glass), SiO2 + additive metal oxides

Pet Rock (Man-made Quartzite or Granite Cobble)

Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Man-made)

Opalite crescent pendant

Opalite (man-made opalescent glass; not a natural mineral)

Aura Quartz (Rainbow Quartz)

Silicon Dioxide (SiO2) with metallic vapor coatings

Slag (Industrial Glass/Metal)

Ferrous slag or Glassy silicate byproduct

Titanium Aura Quartz (Bismuth-coated Druzy)

Silicon Dioxide (SiO2) with Titanium/Metal vapor coating