Metamorphic (Altered Igneous Rock)

Unidentified orange-brown rock fragment

Likely weathered iron-rich volcanic rock or ochre-bearing material; exact identification is impossible from the blurred image

Weathered volcanic rock, likely andesite or basaltic-andesite

Fine-grained plagioclase–pyroxene volcanic rock; possible altered andesite (exact identification requires testing)

Green-gray tumbled stone, possibly nephrite jade

Possible nephrite (interlocking tremolite–actinolite amphibole); identification is uncertain from the photograph

Weathered foliated metamorphic rock, likely schist or gneiss

Micaceous schist/gneiss; composition likely quartz, feldspar, mica, and altered mafic minerals

Polished green stone, likely serpentine or altered basalt

Serpentine-group minerals, chiefly Mg₃Si₂O₅(OH)₄; exact identification requires testing

Tiger's Eye

Silicon Dioxide with Crocidolite (SiO2)

Unakite

Altered Granite (Epidotized Granite)

Unakite

Altered Granite (Epidotized Granite)

Likely weathered basalt or dark metamorphic rock

Fine-grained mafic rock, probably basalt (plagioclase + pyroxene ± olivine)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Blue-gray quartz-bearing metamorphic rock (likely gneiss or schist)

Quartz–feldspar–mica rock; exact identification requires testing

Epidote in Matrix (Dragon Stone variant)

Epidote with Quartz/Feldspar (Ca2(Al,Fe)3(SiO4)3(OH))

Weathered granite or granitic gneiss

Granitic rock, chiefly quartz, feldspar, and mica; exact identification is uncertain from the photograph

Greenish altered rock, possibly serpentinite or chlorite-rich schist

Tentative: serpentine-group minerals, chiefly antigorite/lizardite, or chlorite–actinolite assemblage

Quartz-veined metamorphic rock, likely greenschist or altered metavolcanic

Chlorite–actinolite–epidote-bearing metavolcanic rock with quartz veins; exact identification requires testing

Unakite

Altered Granite (Epidotized Granite)

Unakite

Epidotized Granite

Tumbled bronzite-bearing stone

Bronzite-rich serpentinite or pyroxenite; exact identification requires testing

Epidote in Matrix (Unakite-like Rock Fragment)

Epidote (Ca2(Al,Fe)3(SiO4)3(OH)) / Altered Metamorphic Pebble

Possible weathered quartz-rich rock or iron-stained mineral fragment

Indeterminate; possibly quartz (SiO₂) with iron-oxide inclusions

Greenstone (likely altered basalt or serpentinite)

Chlorite-rich metabasalt or serpentinite; exact identification requires testing

Polished brecciated jasper (likely ocean jasper or orbicular jasper)

Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide and other mineral inclusions

Serpentine

(Mg,Fe)3Si2O5(OH)4

River Cobble (Weathered Granitoid)

Granodiorite / Quartz Diorite

Epidote with Unakite characteristics

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

Weathered quartz-rich rock, possibly quartzite or granite fragment

Uncertain; likely quartz–feldspar aggregate, possibly altered granite or quartzite

Unakite

Altered Granite (Epidotized Granite)

Weathered metamorphic rock, likely quartz-mica schist

Quartz–mica schist; composition typically quartz + muscovite/biotite ± feldspar

Unakite

Altered Granite (Epidotized Granite)

Lapis Lazuli

Lazurite-dominated contact metamorphic rock

Quartz Vein in Greenstone

Hydrothermal Quartz (SiO2) with Chlorite/Epidote Schist host rock

Weathered greenish rock pebble

Possibly altered basalt or greenstone; exact identification is uncertain from the photograph

Unakite

Altered granitic rock (epidosite/unakite)

Likely vesicular basalt with weathering minerals

Basalt, primarily plagioclase and pyroxene, with possible iron oxides and secondary zeolite/carbonate minerals

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Lapis Lazuli

Lapis Lazuli (Complex aggregate of Lazurite, Calcite, and Pyrite)

Weathered gray-green basaltic rock

Basalt, likely altered to low-grade greenschist/amphibolite facies

Polished greenstone pebble

Likely serpentinite or chlorite-rich greenschist

Greenstone (likely metamorphosed mafic rock)

Probable chlorite–actinolite–epidote-rich metabasalt; exact identification requires testing

Likely serpentinite (serpentine-rich rock)

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

Greenstone pebble (likely serpentinite or altered basalt)

Serpentinite, predominantly serpentine-group minerals; exact identification requires testing

Dark, foliated metamorphic rock (likely schist)

Probably mica schist; exact identification requires closer inspection or testing