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

Polished gray-green stone, likely serpentine or nephrite jade

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

Serpentine (Serpentinite)

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

Unakite (likely)

Epidote–feldspar–quartz rock, commonly called unakite; composition is uncertain from the photo.

Greenstone / Epidosite

Epidosite (primary minerals: Epidote and Quartz)

Gneiss (Banded Gneiss)

Gneiss

Likely serpentinized ultramafic rock (serpentinite)

Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with possible magnetite, chromite, and relict olivine/pyroxene

Schist

Mica Schist

Serpentinite (likely serpentinized ultramafic rock)

Serpentine-group minerals, chiefly lizardite, chrysotile, and/or antigorite; commonly derived from peridotite

Gneiss

Gneiss (High-grade regional metamorphic rock)

Likely garnet crystal

Garnet-group silicate; species cannot be determined from the image

Serpentinite (likely chlorite–serpentine rock)

Serpentinite; primarily serpentine-group minerals [Mg3Si2O5(OH)4], with possible chlorite, talc, magnetite, and carbonate

Quartzite

Quartzite

Glaucophane Schist (Blueschist)

Blueschist facies metamorphic rock

Gneiss (with Granite/Pegmatite Vein)

Foliated Metamorphic Rock (Quartz-Feldspar Gneiss)

Granitic Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Banded Gneiss and Siltstone River Stones

Gneiss (High-grade Metamorphic Rock)

Nephrite Jade Elephant Carving

Nephrite (a variety of the calcium, magnesium, and iron-rich amphibole minerals tremolite or actinolite)

Amazonite

Microcline Feldspar (KAlSi3O8)

Dark green cabochon, likely serpentine or nephrite jade

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

Granitic Gneiss

Gneiss (containing Potassium Feldspar and Quartz)

Mixed gemstone jewelry collection

Various gemstone minerals, including likely amethyst (quartz), sapphire or iolite, garnet, pearl, turquoise, and colored beryl or tourmaline

Epidotite (Unakite-related)

Epidote-rich rock

Gneiss (Banded Gneiss)

Gneiss

Banded gneiss

Gneiss, commonly quartz–feldspar–biotite gneiss

Rhodonite

Rhodonite (MnSiO3)

Schist

Mica Schist

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2 (Tremolite-Actinolite series)

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Gneiss (specifically Micaceous Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

Likely rough garnet

Garnet group, possibly almandine (Fe₃Al₂(SiO₄)₃); identification is uncertain from the image

Gneiss

Gneiss (High-grade Metamorphic Rock)

Gneiss

Gneiss (Metamorphic Rock)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Tumbled greenstone (likely serpentine or nephrite jade)

Serpentine-group minerals, chiefly antigorite/lizardite; possibly nephrite, a tremolite–actinolite amphibole aggregate

Rounded greenstone pebble

Likely serpentinite or chlorite-rich metamorphic rock; exact identification requires testing

Gneiss (foliated metamorphic rock)

Gneiss

Greenstone

Greenschist / Greenstone (Epimetamorphic Rock)

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss

High-grade metamorphic rock (Gneiss)

Hypersthene

Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)