Metamorphic (Altered Igneous Rock)

Unakite (often traded as Dragon Blood Jasper)

Epidotized Granite

Epidote-bearing Rock

Epidote / Silicate mineral aggregate

Greenstone or Epidote-rich rock

Epidote or Chlorite schist/greenstone

Unakite

Epidotized Granite

Quartz with Epidote

Silicon dioxide (SiO2) with Calcium aluminum iron silicate (Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))

Epidote with Quartz/Feldspar

Epidote (Ca2(Al, Fe)3(SiO4)3(OH)) with associated minerals in a host rock

Epidote

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

Green Greenstone / Celadonite-bearing Metamorphic Rock

Greenschist / Celadonite / Serpentinitic pebble

Lapis Lazuli

Lapis Lazuli (Metamorphic Rock containing Lazurite, Calcite, Pyrite, and Sodalite)

Unakite

Epidotized Granite

Greenstone (Epidosite)

Epidosite (Metamorphosed Basalt/Diabase)

Unakite

Altered Granite (Epidotized Granite)

Weathered basaltic rock

Basalt, likely amygdaloidal or altered basalt

Lapis Lazuli

Na8[Al6Si6O24]Sn (Lazurite-rich metamorphic rock)

Greenstone / Serpentinite

Serpentine-group / Altered Mafic Rock

Yellow Quartz (Citrine / Milky Quartz)

Silicon Dioxide (SiO2)

Epidote

Epidote (Ca2(Al2,Fe3+)3(SiO4)3(OH))

Greenstone / Epidosite

Metamorphosed Mafic Igneous Rock (Epidote-Chlorite group)

Greenstone / Greenschist

Greenschist (composed of Chlorite, Epidote, Actinolite)

Epidote

Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))

Unakite

Epidotized Granite

Greenstone (River Pebble)

Metabasalt / Greenschist

Unakite

Altered Granite (Epidotized Granite)

Serpentine

Serpentine group, including Antigorite, Lizardite, and Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Greenstone (Epidosite/Altered Diorite)

Metabasalt or Meta-andesite / Epidotized Diorite

Epidotite (Unakite-related Epidote)

Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))

Tumbled epidote-bearing granite or amphibolite

Quartz–feldspar rock with dark amphibole/biotite and epidote; exact identification is uncertain from the image

Sugilite

KNa2(Fe,Mn,Al)2Li3Si12O30

Foliated metamorphic rock, likely gneiss with amphibolite or chlorite-rich bands

Biotite–quartz–feldspar gneiss, locally mafic amphibolite; mineral composition is uncertain from the photograph

Lapis Lazuli

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

Greenstone (Chert)

Microcrystalline Silica (SiO2) with chlorite/epidote inclusions

Rounded gray-green beach pebble

Likely basalt or fine-grained volcanic rock; exact identification requires testing

Epidote

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

Unakite / Epidotized Granite

Metamorphic Granite (Epidote-Orthoclase-Quartz Rock)

Unakite

Altered Granite

Weathered pegmatitic granite or feldspar-rich metamorphic rock

Quartz–feldspar rock, likely granitic pegmatite; exact identification requires testing

Small brown mineral fragment, possibly quartz/chert

Uncertain; likely microcrystalline quartz (SiO₂) or a weathered silicate rock

Greenstone (Prase / Metavolcanic)

Metamorphosed volcanic rock (Greenstone)

Rhodonite

Rhodonite (MnSiO3)

Greenstone / River Jadeite pebble

Metavolcanic rock / Chlorite or Actinolite-rich schist

Unidentified weathered rock fragments

Likely mixed silicate rocks; specific identification requires testing

Greenstone (Epidosite or Serpentinite)

Metabasalt / Epidote-Chlorite Schist