Pyrite Geode
Iron Disulfide (FeS2)
Category
Browse this appears to be a man made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen. specimens identified by the Rock Identifier community.
Pyrite Geode
Iron Disulfide (FeS2)
Smoky Quartz
Silicon Dioxide (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Agate (Polished Sphere)
Silicon Dioxide (SiO2)
Amethyst
Silicon dioxide (variant with ferric iron impurities), SiO2
Herkimer Diamond
Quartz (Silicon Dioxide) - SiO2
Snakeskin Agate
Agate (Cryptocrystalline Quartz, SiO2)
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
Ruby (varieties of Corundum)
Aluminum oxide (Al2O3) with Chromium traces
Rough Diamond
Diamond (Native Carbon, C)
Labradorite
(Ca, Na)(Al, Si)4O8
Yellow Sapphire
Corundum (Al2O3) with iron impurities
Aventurine
Silicon Dioxide (SiO2) with inclusions
Rough Diamond
Diamond (Native Element Carbon, C)
Super Seven (Melody Stone)
Quartz with inclusions (Amethyst, Cacoxenite, Goethite, Lepidocrosite, Rutile, Smoky Quartz, and Clear Quartz)
Diamond
Diamond (C)
Blue Agate (Dyed)
Silicon Dioxide (SiO2) with artificial pigment
Amethyst
Silicon Dioxide (SiO2)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Turquoise (possible Dyed Magnesite/Howlite)
CuAl6(PO4)4(OH)8·4H2O
Green Aventurine
Aventurine Quartz (SiO2 containing Fuchsite)
Citrine
Silicon Dioxide (SiO2)
Sunstone
Feldspar (variety Oligoclase or Labradorite), (Ca,Na)(Al,Si)4O8
Black Onyx
Cryptocrystalline Quartz (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
Green Fluorite
Calcium Fluoride (CaF2)
Fairy Stone (Staurolite)
Staurolite (Fe2+2Al9Si4O22(OH)2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
Chert (Common Opal/Agate inclusion)
Microcrystalline Quartz (SiO2)
Blue Dyed Agate
Chalcedony (SiO2) with artificial pigment
Sunstone
Oligoclase (a variety of Plagioclase Feldspar) - (Na,Ca)(Si,Al)4O8
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
Ruby
Corundum (Al2O3)
Amethyst
Silicon Dioxide with iron impurities (SiO2)
Black Onyx
Silicon dioxide / Chalcedony (SiO2)
Copper Ore (likely Malachite or Chrysocolla staining)
Copper Secondary Mineral (e.g., Cu2CO3(OH)2)
Pyrite
Iron Sulfide (FeS2)
Citrine Quartz
Silicon Dioxide (SiO2)
Dyed Pink Agate Slice
Cryptocrystalline variety of Quartz (SiO2)