Igneous Or Metamorphic

Nephrite Jade

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

Gneiss (specifically a Banded Gneiss cobble)

Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)

Soapstone

Steatite (composed primarily of Talc: Mg3Si4O10(OH)2)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Quartz (pebble)

Quartz (SiO₂)

Epidote

Epidote Group (e.g., Clinozoisite, Epidote, Piemontite), Epidote formula: Ca2(Al,Fe)3(SiO4)3(OH)

Granitic Pegmatite

Granitic Pegmatite with Quartz and Feldspar

Gneiss

Gneiss

Gneiss (with Quartz-Feldspar vein)

Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)

Ruby (Pink to Red Corundum)

Al2O3 (Corundum with Chromium impurities)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Smoky/Grey Quartz Variant)

Silicon Dioxide (SiO2)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Sandstone (Micaceous Sandstone)

Arenite (SiO2 with KAl2(AlSi3O10)(OH)2 inclusions)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Pink Feldspar

Orthoclase (KAlSi3O8) or Microcline

Red Garnet (likely Almandine)

Almandine (Fe3Al2(SiO4)3)

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Milky/Common variant)

Silicon Dioxide (SiO2)

Labradorite

Labradorite (Ca,Na)(Al,Si)4O8

Magnetite with Pyrite or Chalcopyrite inclusions

Magnetite (Fe3O4) with Pyrite (FeS2)

Sapphire (Corundum)

Corundum (Al2O3)

Magnetite (Lodestone variety)

Magnetite (Iron(II,III) oxide, Fe3O4)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Magnetite / Ironstone

Magnetite (Fe3O4)

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite on Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Quartz (likely Jasper or Chert variety)

Quartz (SiO₂)

Epidosite (Epidote-rich rock)

Epidosite (consisting primarily of Epidote: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))

Quartz (likely Rose Quartz or Milky Quartz based on color)

Quartz (SiO2 - Silicon Dioxide)

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

Biotite Schist (likely)

Biotite Schist (rock), Biotite (mineral)

Pyrite

Pyrite (FeS₂)

Black Star Diopside

Diopside (CaMgSi2O6) with Magnetite inclusions

Gneiss (specifically a granitic gneiss cobble)

Gneiss (high-grade regional metamorphic rock)