Rock Specimen Collection - 30 Pieces Igneous, Metamorphic & Sedimentary 30 Unique Rocks! Generously Sized 1.5 inches+ IGNEOUS: Scoria, Granite, Porphyry, Dacite, Rhyolite, Monzonite, Granodiorite, Basalt, Pumice, Breccia METAMORPHIC: Gneiss, Slate, Quartzite, Mylonite, Amphibolite, Schist, Serpentinite, Argillite, Soapstone, Marble SEDIMENTARY: Coal, Limestone, Siltstone, Coquina, Dolomite, Sandstone, Petrified Wood, Shale, Marlstone, Conglomerate Individually bagged with labels and site location of specimens. *Color may vary based on stock supply.