Metamorphic Or Sedimentary (With Staining)

Sunstone

Plagioclase Feldspar ((Ca,Na)(Al,Si)4O8)

Quartzite

Quartzite (primarily SiO2)

Soapstone / Steatite

Steatite (primarily Talc, Mg3Si4O10(OH)2)

Green Aventurine

Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Serpentine

Serpentinite (composed mainly of Group Minerals Antigorite, Chrysotile, and Lizardite; Mg3Si2O5(OH)4)

Serpentinite

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

Citrine (Heat-treated Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Quartzite (River Stone)

Quartzite

Yellow Jade

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

Rhodonite

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

Moonstone

Orthoclase Feldspar (KAlSi3O8) or Albite mixtures

Milky Quartz

Silicon Dioxide (SiO2)

Agate

Silicon Dioxide (SiO2)

Rhodonite

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

Smoky Quartz

Silicon Dioxide (SiO2)

Banded Agate

Cryptocrystalline Quartz (SiO2)

Arfvedsonite in Quartz (also labeled as Astrophyllite or Nuummite by collectors)

[Na][Na2][Mg4Fe2+](Si8O22)(OH)2 in SiO2

Muscovite Mica (on Quartz Matrix)

Muscovite - KAl2(AlSi3O10)(OH)2

Emerald

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

Moonstone

Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)

Smoky Quartz

Silicon Dioxide (SiO2)

Dumortierite Quartz (Blue Quartz)

Al7BO3(SiO4)3O3 (Aluminum Boro-silicate included in Quartz)

Biotite Schist

Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)

Aquamarine with Ruby Accent

Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)

Anthracite Coal

Anthracite

Milky Quartz with Mica (Gneiss/Schist influence)

Silicon Dioxide (SiO2) with Phyllosilicates

Milky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (with inclusions)

Silicon Dioxide (SiO2)

Moonstone

Orthoclase (KAlSi3O8), specifically the variety showing adularescence

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Schist

Mica Schist

Citrine Quartz

Crystalline Quartz (SiO2 with iron impurities)

Greenschist

Greenschist (Chlorite Schist)

Marble

Metamorphic Limestone (CaCO3)

Quartz on Chlorite Schist

Chlorite Schist (Mg,Fe)3(Si,Al)4O10(OH)2 with Quartz (SiO2)

Muscovite Mica (Granitic Pegmatite)

Muscovite - KAl2(AlSi3O10)(OH)2

Blue Quartzite (Dyed)

Silicon Dioxide (SiO2) with inclusions

Smoky Quartz Cluster

Smoky Quartz (Silicon Dioxide - SiO2)

Smoky Quartz

Smoky Quartz (SiO2: Silicon Dioxide)

Biotite Mica in Host Rock

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

Native Gold (in the form of jewelry)

Gold (Au)

Banded Agate

Cryptocrystalline Quartz (SiO2)