Sedimentary And Metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Schist

Mica Schist

Rough Citrine Quartz

Citrine (Silicon Dioxide, SiO2 with iron impurities)

Sandstone (with man-made markings)

Arenite (composed primarily of Quartz, SiO2)

Quartz (Crystal/Druzy Quartz)

Quartz (SiO₂)

Pink Quartz (Inclusion-rich Quartzite)

SiO2 (Silicon Dioxide) with Iron Oxide / Hematite inclusions

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(OH)₄(BO₃)₃Si₆O₁₈)

Garnet Beads

Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)

Rhodonite

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

Shale (Beach-worn)

Laminated Pelite (primarily clay minerals and quartz)

Red Garnet

Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Greenschist

Greenschist (chlorite-epidote schist)

Schist

Mica Schist

Eclogite

Eclogite (Pyrope-Omphacite rock)

Rhodonite

Rhodonite; (Mn,Fe,Mg,Ca)SiO3

Black Tourmaline (Schorl)

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Serpentinite

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

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Citrine

Silicon Dioxide (SiO2)

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Serpentine

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

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Smoky Quartz

Smoky Quartz (SiO2)

Amazonite

K(AlSi3O8), Microcline (potassium feldspar)

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Dragon Blood Jasper

Epidote with Red Jasper (SiO2 + Ca2(Al,Fe)3(SiO4)3(OH))

Citrine Quartz

SiO2 (Silicon Dioxide with Iron impurities)

Tiger's Eye (Mineral Collection)

Tiger's Eye (SiO2 with crocidolite inclusions)

Citrine

Silicon Dioxide (SiO2)

Amazonite

K(AlSi3O8)

Aquamarine (Beryl)

Beryllium aluminum silicate (Be3Al2Si6O18)

Assorted Semi-Precious Gemstone Crosses

Quartz, Silicates, Carbonates (various)

Quartz (Amethyst variety)

Silicon Dioxide (SiO2)

Green Aventurine

Silicon dioxide with Fuscite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Jade (Jadeite/Nephrite)

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

Smoky Quartz (Faceted Beads)

Silicon Dioxide (SiO2)

Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)

Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Unakite

Epidotized Granite