Quartz (Milky/Common variety)
Silicon Dioxide (SiO2)
mineral
Category
Metamorphic (Low Grade)
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Milky Quartz with Iron Staining
Quartz (Silicon Dioxide) - SiO2
mineral
Olivine (likely Peridot variety)
Olivine Mineral Group (specifically Forsterite-Fayalite solid solution series); Chemical formula: (Mg,Fe)2SiO4
Mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Mineral
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Eclogite
Eclogite (composed primarily of Omphacite and Pyrope Garnet)
metamorphic
Feldspar (Orthoclase)
Potassium Feldspar (KAlSi3O8)
mineral
Chalcopyrite in Matrix
Chalcopyrite (CuFeS2)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Diamond
C (Carbon)
mineral
Turquoise in Matrix
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Black Pearl (Tahitian or Irradiated Type)
Organic gemstone (Calcium Carbonate with Conchiolin Binding)
mineraloid
Rough Diamond
Diamond (pure Carbon, C)
mineral
Tanzanite (Rough)
Blue Zoisite (Ca2Al3(SiO4)3(OH))
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Optical Calcite
Calcium Carbonate (CaCO3)
mineral
Lazulite
Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2
mineral
Aventurine Quartz
Silicon dioxide with inclusions (KAl2(AlSi3O10)(OH,F)2)
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Quartz (Milky or Cloudy variety)
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2 - primarily Quartz/Chalcedony/Opal)
Mineral/Fossil (Sedimentary context)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite mica)
metamorphic
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
metamorphic
Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Yellow Quartz (Citrine/Yellow Chalcedony)
Silicon Dioxide (SiO2)
mineral
Emerald in Matrix
Emerald (variety of Beryl) - Be3Al2(SiO3)6
mineral
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
Amphibolite (specifically Hornblende Schist/Gneiss)
Amphibole-rich Metamorphic Rock
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Green Aventurine
Aventurine Quartz (SiO2 + Muscovite/Fuchsite)
metamorphic
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral