Lapis Lazuli
Lapis Lazuli (Rock containing Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Category
Metamorphic Rock
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Arsenopyrite with Schist Matrix
Arsenopyrite (FeAsS)
mineral
Lapis Lazuli
Lapis Lazuli (Rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2, Pyrite, and Calcite)
metamorphic
Garnet (likely Pyrope or Almandine)
Garnet Group (complex nesosilicate minerals, e.g., Pyrope Mg3Al2(SiO4)3, Almandine Fe3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3, Grossular Ca3Al2(SiO4)3, Andradite Ca3Fe2(SiO4)3, Uvarovite Ca3Cr2(SiO4)3). The vivid red color in the image strongly suggests Pyrope or Almandine.
Mineral
Agate
Agate (a cryptocrystalline variety of Quartz, SiO₂)
Mineral
Magnetite (Charnockite Regional Variation)
Magnetite (Fe3O4)
mineral
Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Quartz
Silicon dioxide (SiO2)
Mineral
Quartz (Float/Abraded)
Quartz (SiO₂)
Mineral
Corundum
Corundum (Aluminium oxide, Al2O3)
mineral
Blue Aventurine
Silicon Dioxide (SiO2) containing Dumortierite or Crocidolite inclusions
mineral
Sapphire
Corundum (Al2O3)
mineral
Vesicular Basalt
Vesicular Basalt
igneous
Kyanite
Kyanite (Al2SiO5)
Mineral
Green Aventurine
Tectosilicate, variety of Quartz (SiO2) containing Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
metamorphic
Blue Dumortierite Quartz
Dumortierite Inclusions in Quartz (SiO2 with Al7(BO3)(SiO4)3O3)
mineral
White Sapphire
Corundum (Al2O3)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Granite Pebbles
Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8), and Mica)
igneous
Fluorite and Rose Quartz
Fluorite (CaF2), Rose Quartz (SiO2)
Mineral
Greisen
Greisen
Metamorphic
Yellow Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
metamorphic
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
metamorphic
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Rhodonite
Rhodonite (Manganese silicate, (Mn,Fe,Mg,Ca)SiO3)
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3
mineral
Garnet (Almandine/Pyrope series)
Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)
mineral
Sandstone with Desert Varnish
Arenite (SiO2 predominantly) with Ferromanganese coating
sedimentary
Carnelian
Carnelian (a variety of Chalcedony, SiO ₂)
Mineral (specifically a variety of Chalcedony, which is a cryptocrystalline quartz)
River Rocks (Polished River Pebbles)
Stream-rounded clastic sediments
Mixed (Sedimentary, Igneous, and Metamorphic)
Pet Rock (Man-made Quartzite or Granite Cobble)
Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica
igneous or metamorphic (base stone); anthropogenic (decoration)
Quartz (likely a clear or rock crystal variety)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Magnetite
Iron(II,III) oxide (Fe3O4)
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
metamorphic
Quartz (possibly milky quartz)
Quartz (Silica; SiO₂)
Mineral
Sandstone
Quartz Sandstone (predominantly)
Sedimentary