Phantom Quartz with Chlorite and Hematite inclusions
Silicon Dioxide (SiO2) with inclusions of Chlorite group minerals and Hematite (Fe2O3)
mineral
Category
Anthropogenic Mineral Mimic
Browse anthropogenic mineral mimic specimens identified by the Rock Identifier community.
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Quartz Pebble (with Iron Staining)
Crystalline Silicon Dioxide (SiO2)
mineral
Mystic Topaz
Aluminum silicate fluoride hydroxide with titanium coating (Al2SiO4(F,OH)2)
mineral
Cupronickel (on a 1981 Mexico 20 Pesos coin)
Copper-Nickel Alloy (Cu75Ni25)
mineral
Pyrite-rich Volcanic Rock
Iron Disulfide (FeS2) in Volcanic Matrix
igneous
Man-made Jewelry Charm (Enameled Metal)
Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.
Synthetic / Manufactured Artifact
Man-made Synthetic Material (Not a rock or mineral)
Polyester (Polyethylene terephthalate) / Faux Fur
Synthetic / Textile
Blue Dyed Quartzite
Silicon Dioxide (SiO2) with artificial pigment
metamorphic
Red Jade (Dyed Quartzite)
Silicon Dioxide (SiO2) - variety Quartzite
metamorphic
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Howlite (dyed)
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
mineraloid (man-made)
Crackled Quartz (Blue Dyed)
Silicon Dioxide (SiO2) with anthropogenic dye
mineral
Slag (Industrial By-product)
Anthropogenic Vitreous Silica/Iron Silicate
mineral
Blue Howlite (Dyed)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Iron Slag (Industrial Byproduct)
Anthropogenic Vitrification Product/Ferrous Slag
Mineral-like Industrial Smelting Waste
Dyed Howlite (Purple)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Blue Goldstone
Aventurine Glass (SiO2 with Co and metallic inclusions)
mineral (synthetic glass)
Sea Glass
Amorphous Silica (Anthropogenic glass) - SiO2
mineral
Tumbled Moonstone
Feldspar (Orthoclase/Albite), KAlSi3O8
mineral
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
mineral
Chert (Arrowhead Fragment)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (Wonderstone)
Arenite (composed primarily of SiO2 with Fe2O3 impurities)
sedimentary
Sandstone (Picture Sandstone)
Arenite (primarily SiO2 with iron oxide impurities)
sedimentary
Mixed Quartz Bracelet (Rose Quartz and Larimar-colored beads)
Silicon Dioxide (SiO2) with various inclusions
mineral
Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)
Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)
mineral (synthetic)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Faceted Diamond or Cubic Zirconia
Carbon (C) for Diamond; Zirconium dioxide (ZrO2) for CZ
mineral
Possible tektite or volcanic glass specimen
Natural silica glass; composition commonly near SiO₂, but exact identification requires chemical testing
mineral
Red Dyed Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Opalite
Synthetic Glass (Simulated Opal)
mineral
Dendritic Agate or Moss Agate Nodules (Septarian-like)
Chalcedony with mineral inclusions (SiO2)
sedimentary
Slag (Industrial Glassy Byproduct)
Anthropogenic silicate byproduct (Slag)
Mineral-like byproduct (often mistaken for igneous rock or meteorite)
Ferruginous Conglomerate (or Iron-Rich Concrete/Slag)
Clastic Sedimentary (Silicon Dioxide/Iron Oxide matrix)
sedimentary
Opalite
Synthetic opalescent glass
glass
Sandstone (Wonderstone)
Silicified Sandstone / Orthoquartzite with Liesegang rings
sedimentary
Green Quartzite
Quartzite (primarily SiO2 with trace impurities)
metamorphic
Green Aventurine
Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Leopard Skin Jasper
Jasper (Silicon Dioxide with impurities), SiO2
sedimentary
Opalite
Synthetic Opalised Glass
mineral
Banded Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Red Howlite (Dyed)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5) with Red Dye
mineral