Sedimentary Or Metamorphic Derived

Schist

Schist (Crystalline metamorphic rock)

Jadeite

NaAlSi2O6 (Sodium Aluminum Silicate)

Aventurine (Green)

Silicon Dioxide (Quartz variety) containing Fuchsite - SiO2 + K(Al,Cr)2AlSi3O10(OH)2

Quartz (Water-worn pebble)

Silicon Dioxide (SiO2)

Tiger's Eye

Tiger's Eye (Pseudomorph of Quartz after Crocidolite), SiO2

Green Slate (Greenstone)

Metamorphic shale (varied composition)

Giallo Ornamental Granite

Phaneritic Igneous Rock (composed of Quartz, Feldspar, and Mica)

Moonstone (Feldspar variety)

Orthoclase Feldspar (KAlSi3O8)

Jasper containing epidote (Unakite-like)

Epidotized Jasper (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))

Peacock Ore (Chalcopyrite/Bornite)

Bornite (Cu5FeS4) or iridescent treated Chalcopyrite (CuFeS2)

Black Tourmaline (Schorl)

Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4

Ferruginous Quartz (Iron-stained Quartz)

Quartz with Iron Oxide inclusions (SiO2 with Fe2O3)

Quartz (Milky or Cloudy variety)

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Granodiorite (Gneissic texture)

Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)

Citrine

Citrine (Silicon Dioxide - SiO2)

Gold Ore in Matrix

Native Gold (Au) in Quartz/Limonite host rock

Tiger's Eye

Pseudomorph of Chalcedony (SiO2) after Crocidolite

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Quartz Pebble (Iron-Stained)

Quartz (Silicon Dioxide - SiO2)

Bicolor Tanzanite

Zoisite (Ca2Al3(SiO4)3(OH))

Quartzite

Quartzite (SiO2-rich metamorphic rock)

Slate

Foliated low-grade metamorphic rock

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Schist

Mica Schist

Amazonite

Potassium Feldspar (KAlSi3O8)

Greenschist

Greenschist (Chlorite Schist)

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

Pink Tumbled Quartz (Dyed)

Silicon Dioxide (SiO2)

Jadeite

Jadeite (NaAlSi2O6)

Citrine Quartz

Silicon Dioxide (SiO2)

Serpentine

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

Red Quartzite River Stone

Quartzite (SiO2)

Chalcopyrite

Chalcopyrite (CuFeS2)

Green Quartz (Prasiolite variant or Aventurine)

Silicon Dioxide (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Epidote in Matrix

Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

Moonstone (Feldspar)

Orthoclase/Albite ((K,Na)AlSi3O8)

Chakra Tumbled Stone Set

Various (including Amethyst [SiO2], Sodalite [Na8(Al6Si6O24)Cl2], Green Aventurine [SiO2], Red Jasper [SiO2], etc.)

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Amethyst (Faceted)

Silicon Dioxide with Iron impurities (SiO2)