Metamorphic Rock (For Nephrite And Some Jadeite); Mineral (For Jadeite)

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Schist

Mica Schist (Variable chemistry, often rich in muscovite and biotite)

Greenstone

Greenschist (containing chlorite, epidote, and actinolite)

Greenstone / Glauconitic Siltstone

Metabasalt or Glauconite-rich Sedimentary Rock

Red Quartzite (Tumbled Pebble)

Quartzite (primarily SiO2 with hematite inclusions)

Mixed Gemstone Bracelet

Mixed natural minerals and rocks (e.g., Rhodonite, Malachite, Sodalite, Rose Quartz, Black Tourmaline, Quartz/Chalcedony variants)

Black Tourmaline (Schorl)

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

Lepidolite

K(Li,Al)3(Si,Al)4O10(F,OH)2

Banded Chert (Ironstone type)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (composed primarily of Silicon Dioxide, SiO2)

Quartz Geode

Silicon Dioxide (SiO2)

Unakite (polished/tumbled)

Unakite, a hydrothermally altered granite composed mainly of epidote, pink potassium feldspar (orthoclase/microcline), and quartz

Milky Quartz

SiO2 (Silicon Dioxide)

Granite with Epidote

Granite, containing quartz, feldspar, and epidote

Muscovite Mica

Muscovite (KAl₂(AlSi₃O₁₀)(F,OH)₂))

Schist

Schist (various mineral compositions)

Magnetite

Magnetite (Fe3O4)

Shark Tooth Fossil

Vertebrate fossilized tooth

Labradorite

Labradorite (Plagioclase Feldspar Series) - (Ca, Na)(Al, Si)4O8

Sandstone

Arenite (SiO2 primarily)

Greenstone

Greenschist facies metabasite

Ruby in Zoisite

Ruby (Corundum, Al2O3) in Zoisite (Calcium aluminum silicate hydroxide, Ca2Al3(SiO4)3(OH)) with some Hornblende

Sunstone

Plagioclase Feldspar (specifically Oligoclase variety with hematite or goethite inclusions) Chemical Formula: (Ca,Na)(Al,Si)2Si2O8

Smoky Quartz

Silicon Dioxide (SiO2)

Gneiss (Metamorphic Cobble)

Gneiss

Polished serpentine

Serpentine-group minerals, chiefly lizardite and/or antigorite; approximate formula Mg₃Si₂O₅(OH)₄

Sandstone (likely Arkosic)

Clastic Sedimentary Rock

Yellow Aventurine

Silica (SiO2) with inclusions

Greenstone (Greenschist facies)

Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)

Sandstone (Wonderstone)

Arenite (composed primarily of SiO2 with Fe2O3 impurities)

Sandstone

Arenite

Rutilated Quartz

Quartz (SiO2) with Rutile (TiO2) inclusions

Banded Gneiss

Gneiss

Fuchsite

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

River Pebble (likely Quartzite or Chert)

Sedimentary Clast (Silicon Dioxide dominant)

Amazonite

KAlSi3O8 (Potassium Feldspar, variety of Microcline)

Shale

Sedimentary rock composed of clay minerals and quartz

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Pegmatite

Igneous Pegmatite (felsic intrusive rock)

Magnetite (Lodestone variety)

Magnetite (Fe3O4)

Sodalite

Sodalite [Na8(Al6Si6O24)Cl2]