Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
Synthetic/Man-made glass (often mistaken for a mineral)
Category
Man Made Glass (Not A Natural Rock Or Mineral)
Browse man made glass (not a natural rock or mineral) specimens identified by the Rock Identifier community.
Learn about Man Made Glass (Not A Natural Rock Or Mineral) in the encyclopedia
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Aura Quartz Geodes (Lab-Altered)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition
mineral
Carborundum (Silicon Carbide)
Silicon Carbide (SiC) / Moissanite (natural form)
mineral
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
mineraloid (synthetic)
Clear quartz sphere
Quartz (silicon dioxide, SiO₂)
mineral
Sea Glass
Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature
mineral
Titanium-Coated Hematite (Aura Hematite)
Titanium-bonded Hematite (Fe2O3 with a Ti coating)
mineral
Titanium Amethyst Geode
Silicon Dioxide (SiO2) with Titanium/Metal Vapor Deposition Layer
mineral
Opalite
Synthetic glass (SiO2 + metal additions)
mineraloid
Terrazzo (Man-made Composite)
Cementitious or Resin-bound Lithic Composite
sedimentary (artificial)
Carborundum
Silicon Carbide (SiC)
mineral
Blue Goldstone
Synthetic Avanturine Glass (or Aventurine Glass)
Synthetic Glass
Opalite
Man-made Glass (Synthetic Opalized Glass)
gemstone
Chert Concretion (with typical hematite/limonite staining)
Sedimentary Concretion (SiO2 with FeO(OH)⋅nH2O)
sedimentary
Green Sea Glass
Man-made vitreous material (silica glass)
gemstone
Ocean Jasper Mushroom
Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)
mineral
Opalite (a synthetic glass, often confused with Opal)
Silicon dioxide glass (SiO2nH2O, for natural opal)
Synthetic (glass)
Sea Glass
Amorphous Silicon Dioxide (Man-made glass weathered by nature)
mineral
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Non-geological
Mohave Turquoise (Composite/Stabilized)
Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions
mineral
Rainbow Hematite Ring
Iron(III) oxide (Fe2O3) with thin-film coating
mineral
Concrete Fragment
Hardened Portland cement and mineral aggregate
sedimentary (anthropogenic)
Man-made Glass (Tumbled/Shaped)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Mineraloid (synthetic)
Blue Sapphire (Synthetic or Man-made Glass Imitation)
Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic
mineral
Moldavite
Tektite (Impact Glass), ~80% SiO2 + Al2O3
tektite
Quartz pebble (Quartztite fragment)
Silicon Dioxide (SiO2)
mineral
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
gemstone
Opalite
Synthetic Fluorescent Glass (SiO2 + impurities)
mineraloid (synthetic)
Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)
Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)
mineraloid / industrial byproduct
Opalite
Synthetic Opalised Glass
Mineral (Synthetic / Man-made)
One Pound Coin (UK)
Nickel-Brass Alloy (Cu-Zn-Ni)
mineral
Quartz (Engineered Stone Countertop)
Silicon Dioxide (SiO2) with polymer resins
Sedimentary-like (Industrial Composite)
Dyed Agate
Chalcedony (SiO2)
mineral
Cullet (Slag Glass)
Amorphous Silica (Industrial byproduct)
mineraloid
Libyan Desert Glass
Impact-melt silica glass (SiO2 + traces of Al, Fe, Ti)
mineral (Tektite/Impactite)
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
gemstone
Aura Rose Quartz
SiO2 (Silicon Dioxide with Titanium/Gold coating)
mineral
Goldstone (Brown/Gold)
Aventurine Glass (Man-made glass with Copper inclusions)
gemstone
Concrete fragment or Conglomerate
Artificial Conglomerate (Concrete) or Natural Conglomerate
sedimentary
Concrete with Exposed Aggregate
Anthropogenic conglomerate (Concrete)
man-made rock (sedimentary analogue)
Magnetic Hematite (Man-made)
Iron Oxide (Fe2O3) with Barium-Strontium Ferrite
mineral
Pyrite in Quartz (Drill Core)
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions
igneous/metamorphic (hydrothermal)