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

Gneiss (Granitic Gneiss)

Gneiss

Serpentinite

Serpentinite, dominated by serpentine-group minerals (chrysotile, lizardite, antigorite), commonly with magnetite and chlorite

Serpentinite

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

Carved serpentine wing sculpture

Serpentine-group rock, chiefly antigorite/lizardite: Mg3Si2O5(OH)4

Natural gemstone and mineral collection

Mixed specimens, including turquoise, tiger’s eye, amethyst, fluorite, pyrite, garnet, rose quartz, lapis lazuli, obsidian, rhodonite, red corundum, labradorite, calcite, lepidolite, sodalite, apatite, and others

Amphibolite with Hornblende

Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)

Gneiss

High-grade Metamorphic Gneiss

Polished banded river stone

Likely foliated gneiss or banded metamorphic rock; exact identification requires a fresh surface or testing

Polished dark green stone pendant, likely serpentine or nephrite jade

Serpentine-group minerals, commonly antigorite/lizardite; possible nephrite (microcrystalline tremolite–actinolite)

Amphibolite

Amphibolite

Slate

Foliated low-grade metamorphic rock

Pink Gneiss / Pink Granite Gneiss

Felsic Gneiss (dominated by Orthoclase Feldspar and Quartz)

Hypersthene

Hypersthene ((Mg,Fe)SiO₃)

Yellow serpentine (likely serpentine-rich rock)

Serpentinite; chiefly serpentine-group minerals, such as antigorite, lizardite, and chrysotile

Tumbled greenstone (likely serpentine or nephrite)

Serpentine-group minerals, chiefly Mg₃Si₂O₅(OH)₄; possibly nephrite, a fibrous amphibole aggregate

Granite Gneiss with Garnet

Garnetiferous Gneiss

Unidentifiable Specimen

Undetermined

Greenstone / altered mafic rock

Likely serpentinite or chlorite-rich metabasalt; exact identification requires testing

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Decorative mosaic cross containing mixed rock and glass fragments

Polychrome aggregate; likely quartz, feldspar, marble, granite, and assorted colored glass

Banded Gneiss

Gneiss (Metamorphic rock)

Labradorite (a variety of Feldspar)

Labradorite; (Na,Ca)(Al,Si)4O8 (a plagioclase feldspar)

Greenstone pebble, likely serpentine or epidote-bearing rock

Probable serpentinite (serpentine-group minerals: Mg₃Si₂O₅(OH)₄), possibly epidote-rich metamorphic rock

Gneiss

Gneiss

Gneiss (specifically Pink Gneiss)

Gneiss (high-grade regional metamorphic rock)

Beach Pebble (Nephrite Jade / Chalcedony)

Ca2(Mg,Fe)5Si8O22(OH)2 / SiO2

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss (rounded cobble)

Quartz–feldspar–mica gneiss; exact mineral proportions cannot be determined from the image

Greenstone / Serpentinite

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

Pale green-gray stone, possibly serpentinite

Serpentinite (rock composed mainly of serpentine-group minerals)

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

Smoky Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Nephrite Jade

Silicon Dioxide (SiO2) with Ca2(Mg,Fe)5Si8O22(OH)2

Cleaved feldspar crystal (likely plagioclase)

Plagioclase feldspar, approximately NaAlSi₃O₈–CaAl₂Si₂O₈ solid solution

Gneiss

Gneiss (High-grade metamorphic rock)

Schist

Schist (Crystalline metamorphic rock)

Gneiss

High-grade Metamorphic Gneiss

Tumbled serpentine (likely)

Serpentine-group minerals, commonly antigorite/lizardite: Mg₃Si₂O₅(OH)₄

Gneiss

Gneiss (a metamorphic rock)

Rhodochrosite

Rhodochrosite, Manganese Carbonate (MnCO3)

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

Likely serpentinite with a polished dark-green serpentine pebble

Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), commonly with magnetite and minor chromite/talc