Igneous Or Metamorphic

Greenstone Pebble

Metabasalt (often containing chlorite, actinolite, or epidote)

Nephrite Jade

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

Gneiss

Gneiss

Gneiss (Schistose)

Gneiss

Greenstone / Nephrite Jade

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

Ruby Zoisite

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

Gneiss

Gneiss

Nephrite Jade

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

Greenschist

Chlorite schist (Metamorphic rock dominated by chlorite, epidote, and actinolite)

Greenstone (Metabaltic/Greenschist)

Chlorite schist / Meta-basalt

Greenstone

Metabasalt (composed mainly of chlorite, epidote, and actinolite)

Greenstone

Metabasalt / Greenschist

Greenschist / Basalt Beach Pebble

Metabasalt / Chlorite Schist

Lapis Lazuli

Lapis lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Fuchsite Schist with Quartz

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

Gneiss

Gneiss

Biotite Schist

Biotite-bearing Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)

Gneiss

Gneiss

Gneiss

Gneiss

Greenstone

Metabasalt (often contains Chlorite, Actinolite, and Epidote)

Granite Gneiss

Granitic Gneiss

Nuummite

Nuummite (mixture of Anthophyllite and Gedrite)

Nephrite Jade

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

Nephrite Jade

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

Greenstone

Metabasalt / Chlorite-Epidote Schist

Gneiss

Gneiss

Gneiss (Cobble)

Gneiss

Quartz-veined Gneiss

Gneiss with Quartz (SiO2) intrusions

Greenstone

Greenschist / Meta-basalt

Gneiss (specifically Banded Gneiss)

Gneiss

Banded Gneiss

Gneiss (Metamorphic high-grade, predominantly SiO2, Al2O3, K2O, Na2O)

Lapis Lazuli

Na8(Al6Si6O24)S2 (Lazurite is the primary constituent mineral)

Schist

Mica Schist

Greenstone (Epidote/Chlorite Schist)

Metabasalt (composed primarily of Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH) and Chlorite (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)

Glacial Cobble (likely Granitic or Gneissic)

Granite/Gneiss Glacial Erratic

Serpentine

Antigorite, Lizardite, or Chrysotile; (Mg,Fe)3Si2O5(OH)4

River Stone (Granitic Gneiss)

Foliated Granitic Gneiss

Likely quartz fragment

Quartz (silicon dioxide, SiO₂), possibly milky quartz or quartz-rich rock

Black Granite

Phaneritic Mafic Igneous Rock (likely Gabbronorite or Dolerite)

Quartz in Matrix (or Quartz Vein Rock)

Silicon Dioxide (SiO2) with host rock

Greenstone with Epidote or Quartz Vein

Epidiorite or Metabasalt (composed largely of Chlorite, Epidote, and Amphibole)

Quartz–mica metamorphic rock, likely schist

Quartz–muscovite/biotite schist; predominantly SiO₂ quartz with phyllosilicate micas