Metamorphic Rock (Formed From A Fibrous Crocidolite Asbestos)

Polished banded iron formation (BIF)

Banded iron formation; chiefly hematite/magnetite and microcrystalline quartz (chert), with iron silicates

Blue Tiger's Eye

Crocidolite (fibrous riebeckite) silicified to Quartz (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Serpentine

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

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Tiger’s-eye

Quartz variety; fibrous pseudomorph of quartz after crocidolite, SiO₂

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Fe2O3)

Tiger's Eye

Silicified Riebeckite Asbestos (SiO2 with Iron Oxide inclusions)

Serpentine

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

Serpentine-bearing schist (likely chlorite–talc schist)

Ultramafic-derived greenschist; serpentine-group minerals, chlorite, talc, and possibly actinolite

Serpentinite (likely)

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

Polished tiger’s-eye

Quartz variety, fibrous golden-brown chalcedony; SiO₂

Serpentine

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

Serpentine-rich serpentinite

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

Tiger’s-eye pendant

Chatoyant quartz, primarily fibrous quartz pseudomorph after crocidolite; SiO₂

Tumbled tiger’s eye

Quartz variety, mainly SiO₂ with fibrous crocidolite pseudomorphs

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)

Tiger's Eye and Carnelian Quartz

Silicon Dioxide (SiO2)

Serpentinite

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

Likely serpentinite (serpentine-rich rock)

Serpentine-group minerals, chiefly antigorite/lizardite; commonly derived from ultramafic peridotite

Tiger's Eye

Silicon Dioxide (Quartz pseudomorph after crocidolite) - $SiO_2$

Tiger's Eye

Fibrous Quartz (SiO2) with Limonite

Eagle Eye Stone (Green Tiger's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Tumbled yellow-green stone, likely serpentine

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

Serpentinite (Serpentine Rock)

Primarily composed of serpentine group minerals, such as antigorite, chrysotile, and lizardite. Chemical formula for serpentine minerals is (Mg,Fe)3Si2O5(OH)4.

Serpentinite (serpentinized ultramafic rock)

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

Tiger's Eye (Multicolor/Variegated)

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxides)

Greenstone / Serpentinite

Antigorite/Lizardite series (Mg,Fe)3Si2O5(OH)4

Serpentine (Serpentinite)

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

Red Tiger's Eye

Silicified Crocidolite (Quartz pseudo-morph after Crocidolite), SiO2

Polished tiger’s-eye pebble

Quartz (SiO₂), chatoyant fibrous variety; commonly partly altered crocidolite

Serpentine

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

Red Tiger's Eye

Pseudomorph of Quartz after Crocidolite (Silicon Dioxide: SiO2)

Serpentine / Serpentinite

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

Polished tiger’s-eye cabochon

Quartz variety, primarily fibrous chalcedony with crocidolite pseudomorphs; SiO₂

Tumbled tiger’s-eye

Tiger’s-eye quartz, SiO₂ with fibrous crocidolite pseudomorphs

Serpentinite (likely serpentine-rich rock)

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

Serpentinite

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

Tumbled tiger’s-eye

Quartz variety: fibrous chalcedony/quartz pseudomorph after crocidolite, SiO₂

Tumbled green stone, likely serpentine

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

Tiger's Eye (Brown/Golden)

Silicon dioxide (Quartz pseudomorph after crocidolite), SiO2