Fuchsite
Chromian Muscovite, K(Al,Cr)2(AlSi3O10)(OH)2
mineral
Category
Man Made Byproduct (Often Mistaken For Obsidian Or Emerald)
Browse man made byproduct (often mistaken for obsidian or emerald) specimens identified by the Rock Identifier community.
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Fuchsite
Cr-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Fuchsite (Green Muscovite)
K(Al,Cr)2(AlSi3O10)(OH)2
mineral
Beryl (likely Aquamarine or Green Beryl)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Pearl
Organic gemstone (Calcium carbonate - CaCO3)
mineral
Concrete with Aggregate
Artificial Conglomerate (Cement and Aggregate)
sedimentary
Obsidian
Volcanic Glass (predominantly SiO2 – Silicon Dioxide, but non-crystalline)
Igneous
Concrete
Anthropogenic Conglomerate
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Cubic Zirconia (Jewelry Setting)
Zirconium Dioxide (ZrO2)
gemstone
Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Land Snail Shell
Gastropoda (Calcium Carbonate, CaCO3)
fossil
Polymer Clay (Mock Mineral)
Polyvinyl chloride (PVC) with plasticizers and pigment
Synthetic material (Not a natural rock/mineral)
Chert (Arrowheads)
Microcrystalline Quartz (SiO2)
sedimentary
Mahogany Obsidian
Obsidian with Hematite inclusions (SiO2 + Fe2O3)
igneous
Aura Quartz
Titanium or Gold bonded Silicon Dioxide (SiO2)
mineral
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Metamorphic Rock / Mineral
Fuchsite Gneiss (Green Quartzite)
Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2 with Cr replacements)
metamorphic
Fuchsite
Chrome-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Fuchsite in Quartz
K(Al,Cr)2(AlSi3O10)(OH)2 (Muscovite with Chromium)
metamorphic
Diamond
Diamond (pure carbon C)
mineral
Jadeite
NaAl(Si2O6)
gemstone
Rough Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Jadeite Jade
Jadeite (NaAlSi2O6)
metamorphic
Quartz
SiO₂ (Silicon Dioxide)
Mineral
Diamond
Native Carbon (C)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Peridot (Olivine)
Olivine (Magnesium Iron Silicate), (Mg,Fe)2SiO4
mineral
Unidentified Dark Mineral or Rock
Indeterminate (Likely Silicon Dioxide or Carbon-based)
mineral
Hypersthene (or Enstatite/Ferrosilite)
Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)
Mineral
Jadeite
NaAlSi2O6 (Sodium Aluminum Silicate)
metamorphic
Sandstone (Quartzose)
Sandstone (SiO2 dominated)
sedimentary
Chrysocolla
Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Man-made earbud charging case (Not a rock or mineral)
Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components
Synthetic/Man-made object
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Chrysoprase
Chalcedony (Silicon Dioxide, SiO2) with Nickel impurities
gemstone
Likely polished black stone or obsidian
Obsidian (volcanic glass), chiefly SiO₂
igneous
Silver Sheen Obsidian
Volcanic Glass (SiO2)
igneous
Sandstone
Arenite
sedimentary
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Ruby (Raw Corundum)
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
mineral