Diamond (as featured in jewelry)
Diamond (C - pure carbon)
mineral
Category
Mineral (Man Modified)
Browse mineral (man modified) specimens identified by the Rock Identifier community.
Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating
mineral
Slag (Industrial Byproduct)
Artificial silicate/iron byproduct
Mineral description (Anthropogenic material)
Sandstone Concretion
Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)
sedimentary
Polymer Clay (Mock Mineral)
Polyvinyl chloride (PVC) with plasticizers and pigment
Synthetic material (Not a natural rock/mineral)
Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)
Titanium-coated Metal Cube (Man-made Fidget Toy)
Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)
Mineral alternative / Synthetic
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
mineraloid (man-made)
Ruby in Matrix
Corundum (Al2O3)
mineral
Opalite
Synthetic Opalised Glass
mineral
Ocean Jasper Mushroom
Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)
mineral
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
mineral
Bouncy Ball (Synthetic Rubber Polymer)
Polybutadiene / Ethylene Vinyl Acetate (EVA)
Synthetic material (Not a rock or mineral)
Sandstone Concretion
Septarian or Carbonate-cemented Sandstone Concretion
sedimentary
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
mineral
Slag
Metallurgical by-product
Anthropogenic (Man-made material)
Pyrite in Quartz (Drill Core)
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions
igneous/metamorphic (hydrothermal)
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral
Opalite (Synthetic Moonstone/Sea Opal)
Silicon Dioxide (SiO2) glass with metallic inclusions
Synthetic/Man-made Glass
Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
Synthetic/Man-made glass (often mistaken for a mineral)
Blue Cracked Quartz (Dyed Fire Crackle Quartz)
Silicon Dioxide (SiO2) with synthetic dye
mineral
Metal Alloy (Likely Pewter or Sterling Silver)
Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).
Man-made material (metal)
Asphalt (Road Aggregate)
Bituminous Conglomerate / Asphalt Concrete
Anthropogenic (Man-made)
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Opalite
Synthetically produced glass (Silicon Dioxide with metallic inclusions)
Mineraloid (Man-made Glass)
Green glass sphere/marble
Soda-lime glass (primarily SiO2, Na2O, CaO)
Man-made object (Simulant)
Fluorite (Polished Point/Tower)
Calcium Fluoride (CaF2)
mineral
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
mineral
Slag
Anthropogenic glassy silicate
Mineral-like byproduct
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid
Opalite
Synthetic Glass (Simulated Opal)
mineral
Diamond
Diamond (pure Carbon, C)
mineral
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Pink Tumbled Quartz (Dyed)
Silicon Dioxide (SiO2)
mineral
Iron Slag (Industrial Byproduct)
Anthropogenic Vitrification Product/Ferrous Slag
Mineral-like Industrial Smelting Waste
Transit Token (RTD Denver)
Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)
not a rock or mineral (anthropogenic material)
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
sedimentary (anthropogenic / man-made)
Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
mineral
Rainbow Hematite (Titanium Coated)
Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating
mineral
Acrylic or Resin (Synthetic Imitation)
Polymethyl Methacrylate (PMMA) or Polyepoxide
Synthetic/Man-made Polymer
Dyed Imperial Jasper (Sea Sediment Jasper)
Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony
sedimentary