Sedimentary Or Metamorphic

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Aventurine (likely Green Aventurine)

Aventurine (a variety of quartz, SiO₂, with common inclusions of fuchsite)

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Banded Sandstone (Zebra Stone)

Arenite with Iron Oxide Banding (Liesegang rings)

Sandstone with Ironstone Concretion

Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))

Milky Quartz (Water-worn pebble/nodule)

Quartz (Silicon Dioxide - SiO2)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Fuchsite (Green Muscovite)

K(Al,Cr)2(AlSi3O10)(OH)2

Lapis Lazuli

Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Lapis Lazuli

Lazurite-rich metamorphic rock; (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Lapis Lazuli (prominent blue specimen in collection)

Lazurite-rich metamorphic rock (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2

Lapis Lazuli (Low Grade)

Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2)

Lapis Lazuli

Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Sandstone Concretion

Sedimentary concretion

Sandstone or Limestone

Sedimentary Rock

Shale

Shale (Lutite)

Shale

Fissile mudstone (rich in clay minerals and quartz)

Shale

Fissile mudrock (composed primarily of clay minerals and quartz)

Lapis Lazuli

Lazurite-rich metamorphic rock (approx. (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Nephrite Jade

Ca2(Mg,Fe)5Si8O22(OH)2

Sandstone

Arenite (primarily SiO2)

Shale

Fissile mudrock (composed of clay-sized particles and detrital grains)

Shale

Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)

Shale

Clastic sedimentary rock (primarily clay and silt minerals)

Yellow Jade (Nephrite or Jadeite)

Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 or Jadeite: NaAlSi2O6

Mixed Gemstone Beaded Jewelry

Various minerals (e.g., Quartz varieties like Rose Quartz, Amethyst; Peridot; Garnet; etc.)

Lapis Lazuli

Sodalite-rich metamorphic rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Halite (Rock Salt)

Halite (Sodium Chloride, NaCl)

Quartzite

Quartzite (SiO2)

Greenstone

Chlorite schist / Meta-basalt

Rhodonite

Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3

Almandine Garnet

Almandine (Fe3Al2Si3O12)

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Man-made Carved Stone (Scream Mask/Skull motif)

Carved Soapstone or Serpentine-rich rock

Schist

Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Nephrite Jade

Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2

Lapis Lazuli

Complex metamorphic rock containing Lazurite ((Na,Ca)8(AlSiO4)6(SO4,S,Cl)2), Calcite, and Pyrite

Mixed Tumbled Gemstones (Agate, Aventurine, Pyrite, etc.)

Multiple (principally Silicon Dioxide SiO2 and Iron Disulfide FeS2)

Stilbite

Stilbite-Ca (NaCa4Mg[Al9Si27O72]·28H2O)

Rhodochrosite in Quartz

Manganese Carbonate (MnCO3)