Igneous, Sedimentary, Metamorphic

Gneiss with Quartz/Feldspar Vein

Quartz-Feldspathic Gneiss

Quartz

Quartz (SiO2 - Silicon Dioxide)

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2

Mica Schist fragment

Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3(AlSi3O10)(OH)2)

Gneiss

Gneiss

Gneiss

High-grade regional metamorphic rock

River Pebble (Gneiss or Quartzite variant)

Metamorphic rock specimen (likely Quartzite or Gneiss)

Green Gneiss or Greenschist

Chlorite/Actinolite Gneiss or Schist

Gneiss with Quartz Veining

Gneiss (High-grade Metamorphic Rock)

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss with Quartz Veining

Gneiss (High-grade Metamorphic Rock)

Gneiss Pebble

Gneiss (High-grade metamorphic rock)

Gneiss

Gneiss

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss

Gneiss

Gneiss (Banded Gneiss)

Gneiss

Banded Gneiss

Gneiss

Pink Granite Gneiss

Granitic Gneiss

Grey River Stone (Gneiss/Schist mix)

Foliated Metamorphic Rock (variable mineral formula)

Healer's Gold (Pyrite and Magnetite in Schist)

Magnetite (Fe3O4) and Pyrite (FeS2) in Mica Schist

Gneiss

Gneiss

Gneiss (Schistose)

Gneiss

Ruby Zoisite

Anyolite (Ca2Al3(SiO4)3(OH) + Al2O3:Cr)

Gneiss

Gneiss

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Gneiss

Gneiss (Metamorphic Rock)

Gneiss

Gneissic Metamorphic Rock

Gneiss (Metamorphic Pebble)

Gneissic Metamorphic Rock

Gneiss

Gneissic Metamorphic Rock

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Quartz with Mica inclusions (likely Schist or Gneiss host)

Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss

Gneiss (Metamorphic Rock)

Gneiss

Foliated Metamorphic Rock

Gneiss

Gneissic Metamorphic Rock

Banded Gneiss

Gneiss (Felsic to Mafic Metamorphic Rock)

Banded Gneiss

Banded Gneiss (High-grade Metamorphic Rock)

Fuchsite Schist with Quartz

Chromian Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2] Schist

Amphibolite / Biotite Schist

Amphibolite (rich in Hornblende and Plagioclase feldspar)

Gneiss

Gneiss

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)