Metamorphic Rock (Formed From A Fibrous Crocidolite Asbestos)

Tumbled green serpentine (probable)

Serpentine-group minerals, chiefly antigorite and lizardite; hydrated magnesium silicate, approximately Mg₃Si₂O₅(OH)₄

Tumbled Jasper and Tiger's Eye

Silicon Dioxide (SiO2) with iron oxide inclusions

Blue Quartz (Blue Aventurine)

Silicon Dioxide (SiO2) with inclusions (typically crocidolite or dumortierite)

Serpentinite (often called Jade or Nephrite substitute)

Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)

Likely tumbled serpentine or greenstone pebble

Serpentine-group minerals, chiefly antigorite/lizardite; identification is uncertain from the photo

Polished tiger iron cabochon

Banded iron formation (BIF), chiefly hematite/magnetite, jasper, and tiger’s-eye quartz

Serpentinite

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

Blue quartz (likely dumortierite-in-quartz)

Quartz, SiO₂, colored by fibrous dumortierite inclusions

Serpentinite (likely serpentine-rich stone)

Serpentine-group minerals, chiefly antigorite, lizardite, and/or chrysotile; commonly with magnetite and talc

Serpentine

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

Serpentinite

Serpentinite (complex silicate minerals including Lizardite, Antigorite, and Chrysotile)

Weathered serpentinized ultramafic rock

Serpentinite; chiefly serpentine-group minerals, commonly with magnetite, brucite, talc, and relict olivine/pyroxene

Tiger’s-eye (likely red/brown variety)

Chatoyant quartz, chiefly SiO₂, pseudomorphous after crocidolite (riebeckite)

Polished pietersite cabochon

Pietersite (brecciated fibrous quartz/chalcedony, commonly with riebeckite or crocidolite remnants)

Serpentinite (likely serpentinized ultramafic rock)

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

Tumbled serpentine

Serpentinite; chiefly antigorite, lizardite, and chrysotile, with possible magnetite and accessory minerals

Serpentinite pebble

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

Jasper (Tiger Eye variety transition)

Silicon Dioxide (SiO2) with iron oxide inclusions

Serpentine with quartz or calcite vein

Serpentinite; mainly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with a pale quartz/calcite vein

Serpentine

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

Serpentinite

Serpentinite; chiefly serpentine-group minerals (lizardite, antigorite, chrysotile), often with magnetite and relict olivine/pyroxene

Polished greenstone (likely serpentine)

Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄

Tumbled serpentinite

Serpentinite, composed chiefly of serpentine-group minerals (lizardite, antigorite, chrysotile), commonly with magnetite and chlorite

Serpentine

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

Tumbled greenstone (likely serpentine)

Serpentinite; mainly serpentine-group minerals, commonly antigorite, lizardite, or chrysotile

Tumbled banded tiger’s-eye

Quartz (SiO₂) with fibrous iron oxides, chiefly goethite and/or hematite

Tiger Iron

Tiger Iron (Composition: SiO2, Fe2O3, Fe3O4)

Serpentine

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

Polished greenstone / serpentine (probable)

Serpentinite, dominated by serpentine-group minerals such as antigorite, lizardite, or chrysotile

Polished tiger’s-eye with black hematite/goethite band

Quartz (SiO₂), fibrous pseudomorph after crocidolite, with iron oxides

Polished/tumbled serpentine

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

Red Tiger's Eye

Silicon Dioxide (SiO2) with iron oxide inclusions

Serpentinized ultramafic rock (probable serpentinite)

Serpentinite, dominated by serpentine-group minerals (lizardite/chrysotile/antigorite), with possible magnetite and carbonate

Tumbled serpentinite (likely)

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

Serpentinite (likely)

Serpentinite, composed mainly of serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with possible magnetite, chromite, and talc

Tiger's Eye and Hematite

Quartz (SiO2) with Crocidolite inclusions and Hematite (Fe2O3)

Tumbled serpentine

Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; commonly Mg₃Si₂O₅(OH)₄

Serpentine

Serpentine Group (Mg3Si2O5(OH)4)

Serpentine

Antigorite / Lizardite / Chrysotile [(Mg,Fe)3Si2O5(OH)4]

Polished serpentine (likely bowenite/antigorite)

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

Serpentinite pebble

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

Tumbled serpentine (likely nephrite-like greenstone)

Serpentine-group minerals, chiefly antigorite/lizardite; possibly mixed with tremolite-actinolite