Polished green tumbled stone, likely serpentine
Serpentinite (rock composed chiefly of serpentine-group minerals, approximately Mg₃Si₂O₅(OH)₄)
metamorphic
Category
Metamorphic Rock (Specifically A Rock Composed Of Minerals)
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Granite / Diorite (Granitoid)
Granitoid rock (composed mainly of Quartz, Feldspar, and Amphibole/Biotite)
igneous
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Gneiss
Gneiss (Metamorphic rock)
metamorphic
Unakite
Epidotized Granite (Composed of Orthoclase Feldspar, Epidote, and Quartz)
metamorphic
Quartz-rich rock (possibly quartzite)
Quartzite, composed mainly of quartz (SiO₂)
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4)
metamorphic
White Marble
Calcite-rich Metasomatized Carbonate (CaCO3)
metamorphic
Sandstone Beach Pebble
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)
sedimentary
Serpentinite
Serpentinite (composed primarily of serpentine group minerals like lizardite, antigorite, and chrysotile)
metamorphic
Granite / Arkosic Sandstone (Coarse Igneous or Sedimentary Aggregate)
Granite / Quartz-Feldspar Aggregate
igneous
Banded green stone, likely serpentinite
Serpentinite (rock composed chiefly of serpentine-group minerals; exact identification requires testing)
metamorphic
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
igneous
Gneiss
Gneissic Metamorphic Rock
metamorphic
Coarse-grained granite or granitic pegmatite fragment
Granite; primarily quartz, feldspar, and mica
igneous
Sandstone Pebbles
Arenite (Sedimentary rock composed of sand-sized grains)
sedimentary
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Granite
Granite (Plutonic Igneous Rock)
igneous
Serpentine (Serpentinite)
Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Limestone
Sedimentary rock composed of Calcium Carbonate (CaCO3)
sedimentary
Lapis Lazuli
Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Pink Granite
Phaneritic Felsic Igneous Rock
igneous
Quartzite
Quartzite (composed primarily of Silica, SiO2)
metamorphic
Quartzite
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Asphalt Pavement (with aggregate)
Asphalt concrete
man-made composite
Schist
Metamorphic Rock (Schist)
metamorphic
Schist
Schist (metamorphic rock)
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Granite (Pink/Potassium Feldspar Granite)
Felsic Plutonic Rock (Potassium Feldspar, Quartz, Mica, and Amphibole)
igneous
Schist
Schist (Metamorphic Rock)
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Gneiss
Foliated Metamorphic Rock
metamorphic
Unakite / Epidotized Granite
Metamorphic Granite (Epidote-Orthoclase-Quartz Rock)
metamorphic
Diorite with Quartz Veins
Diorite
igneous
Mica-rich metamorphic rock, likely schist
Muscovite–biotite schist, possibly with quartz and feldspar
metamorphic
Granite
Granite, a coarse-grained felsic intrusive igneous rock composed mainly of quartz, feldspar, and mica
igneous
Argillite / Mudstone
Argillaceous sedimentary rock
sedimentary
Banded gneiss
Foliated, banded gneiss; typically composed of quartz and feldspar with mica or other dark minerals
metamorphic
Serpentine-rich metamorphic rock
Serpentinite, likely antigorite/lizardite with accessory magnetite or chromite
metamorphic
Red Quartzite (Strawberry Quartz)
Quartzite (SiO2 with iron oxide inclusions)
metamorphic