Yellow Aventurine (Yellow Quartz)
Silicon Dioxide (SiO2) with inclusions of Muscovite or Mica
Mineral (variant of Quartz)
Category
Carved Stone
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Unakite
Granite (altered hydrothermal)
igneous
Carnelian
Carnelian (variety of Chalcedony, SiO2)
mineral
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2 (Calcium magnesium iron silicate hydroxide)
metamorphic
Amethyst (as a jewelry accent)
Amethyst (Silicon Dioxide SiO2 with Iron impurities)
mineral
Chalcedony
Silicon Dioxide (SiO2)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Almandine Garnet (weathered)
Almandine (Fe3Al2(SiO4)3)
mineral
Sandstone (Quartz-rich)
Arenite (composed mainly of SiO2)
sedimentary
Greenstone (Greywacke or Nephrite Jade variant)
Metamorphosed mafic igneous or sedimentary rock (e.g., Actinolite-Chlorite Schist)
metamorphic
Serpentine
Serpentine group, including Antigorite, Lizardite, and Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
mineral
Yellow Jasper
Chalcedony/Quartz (SiO2)
sedimentary
Blue Lace Agate (Geode/Druzy variant)
Chalcedony (SiO2) with Quartz druzy
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Green Aventurine (Green Quartz)
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
Mineral/Metamorphic rock
Chert (Yellow Jasper/Flint)
Silicon dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Rose Quartz
Rose Quartz (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
metamorphic
Serpentine
Antigorite, Lizardite, or Chrysotile; (Mg,Fe)3Si2O5(OH)4
metamorphic
Green Aventurine
Si O2 (Silicon Dioxide with Fuchsite inclusions)
mineral
Green Aventurine
Silicon Dioxide (SiO2 with Fuchsite inclusions)
metamorphic
African Turquoise
Teal Jasper (Macro-crystalline Quartz/Sio2 + Inclusions of Copper, Iron, and Manganese)
sedimentary
Red Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
mineral
Jasper
Cryptocrystalline quartz (SiO2)
Sedimentary/Mineral
Caribbean Calcite
Calcium Carbonate (CaCO3) with Aragonite (CaCO3)
sedimentary
Banded Calcite (often marketed as Mexican Onyx or Onyx Marble)
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Green Glass (often marketed as 'Obsidian' or 'Green Quartz')
Amorphous Silica (SiO2) with copper or chromium additives
Mineraloid (Man-made)
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Obsidian (Black Obsidian)
Amorphous volcanic glass (primarily SiO2)
igneous
Black Obsidian
Volcanic Glass (predominantly SiO2)
igneous
Carnelian
Silicon dioxide (SiO2) with iron oxide impurities
mineral
Celestite Geode
Strontium Sulfate (SrSO4)
mineral
Peacock Ore
Bornite (Cu5FeS4)
mineral
Raw Carnelian
Quartz (Chalcedony) - SiO2 with Fe2O3 inclusions
mineral
White Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
gemstone