Metamorphic Rock (For Nephrite And Some Jadeite); Mineral (For Jadeite)

Gneiss (specifically a Banded Gneiss pebble)

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss (Granitic Gneiss)

Gneiss (from German Gneis, related to 'spark')

Gneiss (River Cobble)

Gneiss (Foliated Metamorphic Rock)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Serpentinite

Serpentinite (a rock composed predominantly of serpentine group minerals)

Gneiss

Gneiss (high-grade metamorphic rock typically composed of quartz, feldspar, and mica)

Red Garnet

Garnet Group (e.g., Pyrope, Almandine, Spessartine, Grossular, Andradite, Uvarovite)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Aquamarine with Sunstone

Aquamarine (Be3Al2Si6O18), Sunstone (Na,Ca)Al(Si,Al)Si2O8

Diorite Gneiss

Foliated Diorite Gneiss

Mixed Tumbled Stones Collection

Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Slate

Foliated Metamorphic Rock

Schist

Schist (various mineral compositions)

Quartz

Quartz (SiO2 - Silicon Dioxide)

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Serpentine

Serpentine-group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Rhodonite

Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3

Gneiss

Gneiss (High-grade regional metamorphic rock)

Hypersthene (or Enstatite/Ferrosilite)

Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)

Gneiss

Gneiss (high-grade metamorphic rock)

Biotite (Black Mica)

Biotite [K(Mg,Fe)3(AlSi3O10)(F,OH)2]

Rough Corundum (likely Sapphire/Zircon-bearing)

Aluminium Oxide (Al2O3)

Gneiss (specifically a Granitic Gneiss specimen)

Gneiss (high-grade metamorphic rock primarily composed of Quartz, Feldspar, and Biotite/Amphibole)

Mica Schist

Mica Schist (primarily Muscovite and Quartz)

Banded Gneiss

Gneiss (Metamorphic high-grade, predominantly SiO2, Al2O3, K2O, Na2O)

Gneiss

Gneiss (Metamorphic rock composed primarily of quartz, feldspar, and mica)

Almandine Garnet

Fe3Al2(SiO4)3

Sodalite

Na8(Al6Si6O24)Cl2

Labradorite

Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8

Granite Gneiss

Gneiss (High-grade metamorphic rock)

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)

Gneiss (complex silicate composition)

Mixed Quartz and River Pebbles (Stone Collection)

Mixed assortment containing mainly Silicon Dioxide (SiO2)

Pyrite

Pyrite (Iron Disulfide), FeS2

Granite Gneiss

High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)

Smoky Quartz

SiO2 (Silicon Dioxide)

Gneiss

Metamorphic rock of high-grade regional metamorphism

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Ferruginous Quartz (Iron-stained Quartzite)

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Gneiss (specifically a Granitic Gneiss)

Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)