Mineral, Often Found In Metamorphic Rocks But Also In Sedimentary And Igneous Rocks

Rhodonite

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

Blue Calcite (commonly sold as Caribbean Calcite)

Calcium Carbonate (CaCO3)

Muscovite Mica (on Quartz Matrix)

Muscovite - KAl2(AlSi3O10)(OH)2

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Hematite

Hematite (Fe2O3)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Serpentine, likely a variety of Chrysoprase (green chalcedony) or a similar translucent green mineral.

Serpentine Group Minerals (e.g., Antigorite, Lizardite) or Chalcedony (SiO2) with nickel impurities for Chrysoprase green.

Gneiss

Gneiss (High-grade regional metamorphic rock)

Quartz (Yellow/Citrine variety)

Crystalline Silicon Dioxide (SiO2)

Blue Celestite

Celestine (Strontium Sulfate, SrSO4)

Smoky Quartz

Silicon Dioxide (SiO2)

Gneiss

Gneiss

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Rhodonite

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Quartz (Smoky/Grey Quartz Variant)

Silicon Dioxide (SiO2)

Orange Calcite

Calcite (CaCO3)

Ruby in Zoisite (Anyolite)

Corundum var. Ruby in Zoisite (Al2O3 + (Ca2Al3(SiO4)3(OH)))

Gneiss

Gneiss (High-grade Metamorphic Rock)

Quartz Vein (Iron-stained)

Silicon Dioxide (SiO2) with limonite/hematite staining

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Ruby Fuchsite / Ruby in Fuchsite

Ruby (Al2O3 variety corundum) and Fuchsite (K(Al,Cr)2AlSi3O10(OH)2 - a chromium-rich variety of muscovite mica) in Quartz matrix

Rose Quartz

Silicon Dioxide (SiO2) with traces of Titanium, Iron, or Manganese

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Aventurine Quartz

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Shale

Shale (comprised mostly of clay minerals and quartz)

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Galena

Lead Sulfide (PbS)

Hypersthene

(Mg,Fe)SiO3 - Enstatite-Ferrosilite series

Fuchsite Schist

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Schist

Gneiss (specifically Banded Gneiss)

Gneiss

Pyrite in Matrix (Quartz/Schist)

Iron Sulfide (FeS2)

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Smoky Quartz

Silicon Dioxide (SiO2)

Serpentine Jade (New Jade/Olive Jade)

Serpentinite (a rock composed primarily of serpentine minerals) / Mg3Si2O5(OH)4 for Antigorite and Lizardite

Moonstone

Adularia (orthoclase) or Albite (plagioclase), a potassium aluminum silicate of the feldspar group

Milky Quartz

Silicon Dioxide (SiO2)

Nephrite Jade

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

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2)