Chrysocolla in Matrix
Hydrated copper silicate - (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Category
Mineral, Jewelry
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Jadeite
NaAlSi2O6; Jadeite silicate mineral
metamorphic
Aragonite
Aragonite (Carbonate mineral), CaCO3
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions
Mineral
River Pebble (Gneiss/Schist mix)
Metamorphic rock aggregate
metamorphic
Fossil Shark Teeth (likely Sand Tiger Shark)
Carcharias taurus (fossilized dentition)
fossil
Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Metal Chain Belt with Square Plates
Not applicable (man-made)
Man-made Object (Metalwork)
Sandstone or Mudstone with Iron Staining
Ferruginous Sandstone/Mudstone
Sedimentary
Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Blue Quartzite (Dyed)
Silicon Dioxide (SiO2) with inclusions
metamorphic
Yellow Aventurine (Yellow Quartzite)
Silicon Dioxide (SiO2) with inclusions
metamorphic
Dyed howlite or turquoise imitation
Howlite: Ca₂B₅SiO₉(OH)₅; turquoise: CuAl₆(PO₄)₄(OH)₈·4H₂O
mineral
Pyrite (Fool's Gold) in Matrix
Iron Sulfide (FeS2)
mineral
Agate
Agate (Chalcedony), SiO2
Mineral
Cowrie Shell Fossil
Cypraea sp.
fossil
Yellow Aventurine
Quartz (Silicon Dioxide, SiO2) with inclusions
mineral
Malachite
Copper carbonate hydroxide Cu2CO3(OH)2
mineral
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Quartz (Milky/Crystalline)
Silicon Dioxide (SiO2)
mineral
Dalmatian Jasper
Peralkaline rhyolite with Arfvedsonite inclusions
igneous
Green Aventurine
SiO2
mineral
Heat-Treated Amethyst (Commercial Citrine)
Silicon Dioxide (SiO2) - Macro-crystalline Quartz
mineral
Sea Glass
Man-made vitreous material
mineral
Tiger's Eye (specifically Hawk's Eye or Multicolored Tiger's Iron)
Silicon Dioxide with Crocidolite inclusions (SiO2)
mineral
Aura Druzy Agate (Star Shape)
Silicon Dioxide (SiO2) with Titanium/Metal Vapor Coating
mineral
Quartz with Tourmaline Inclusions (Tourmalinated Quartz)
SiO2 with complex borosilicate inclusions
Mineral
Agate
SiO2
mineral
Agate
Agate (Cryptocrystalline Quartz)
mineral
Jasper
Silicon dioxide, SiO2
Mineral
Silver (Native Element)
Ag (Argentum)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
gemstone
Petrified Wood
Silicified wood (SiO2)
fossil
Blue Agate (Dyed or Treated Chalcedony)
Silicon Dioxide (SiO2), microcrystalline quartz variety
mineral
Peach Moonstone
Orthoclase (Potassium Aluminum Silicate), KAlSi3O8
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
Carnelian
Carnelian (SiO2)
mineral