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

Tiger's Eye

Silicon dioxide (SiO2) with fibrous inclusions of crocidolite

Serpentine-rich rock (likely serpentinite)

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and brucite

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Likely serpentine-rich metamorphic rock

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, or chrysotile), with possible magnetite and minor chlorite/talc

Tumbled serpentine-rich rock

Serpentinite, likely antigorite/lizardite with magnetite and minor carbonates

Serpentinized ultramafic rock (serpentinite)

Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, with possible magnetite, chromite, talc, and carbonate

Dark veined metamorphic rock, likely serpentinite

Serpentinite; predominantly serpentine-group minerals, possibly with magnesite or calcite veins

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Blue Zircon

Zircon (Zirconium Silicate), ZrSiO4

Weathered banded gneiss (probable)

Gneiss; quartz–feldspar–mica metamorphic rock

Gneiss with Quartz Veining

Gneiss (High-grade metamorphic rock)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)

Quartzite with Mica schist fragment

Quartzite (SiO2) with Muscovite/Biotite Schist

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

Greenstone (likely serpentinite or chlorite-rich schist)

Serpentinite: Mg-rich phyllosilicates, chiefly antigorite/lizardite; possible chlorite-actinolite schist

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Gneiss (specifically a Granitic Gneiss specimen)

Gneiss (high-grade metamorphic rock primarily composed of Quartz, Feldspar, and Biotite/Amphibole)

Gneiss

Gneiss (high-grade metamorphic rock typically composed of quartz, feldspar, and mica)

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

Serpentine-rich serpentinite

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

Tumbled greenstone pebble

Likely serpentinite or greenstone; exact identification requires testing

Gneiss (River Cobble)

Metamorphic Gneiss

Diorite Gneiss

Foliated Diorite Gneiss

Gneiss (Metamorphosed Granitic Rock)

Gneiss (composed mainly of quartz, feldspar, biotite, and/or hornblende)

Gneiss with Quartz Veining

Gneiss (High-grade Metamorphic Rock)

Serpentine-rich metamorphic rock

Serpentinite; chiefly antigorite/lizardite/chrysotile, commonly with magnetite and carbonate

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Greenstone

Greenschist / Meta-basalt

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Likely chlorite schist or altered mafic rock

Chlorite–actinolite schist; commonly composed of chlorite, actinolite/amphibole, epidote, and albite

Greenstone with Quartz Veining

Epidiorite or Metabasalt with SiO2 (Quartz) veins

Red Garnet

Garnet Group (e.g., Pyrope, Almandine, Spessartine, Grossular, Andradite, Uvarovite)

Serpentinite (serpentinized ultramafic rock)

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

White quartz pebble (possibly milky quartz)

Quartz, SiO₂

Serpentinite

Serpentinite (a rock composed predominantly of serpentine group minerals)

Labradorite

Plagioclase Feldspar ((Ca, Na)(Al, Si)4O8)

Gneiss (Granitic Gneiss)

Gneiss (from German Gneis, related to 'spark')

Almandine Garnet

Fe3Al2(SiO4)3

Granite Gneiss

High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)

Greenstone

Metabasalt (composed of chlorite, epidote, and actinolite)