Sedimentary Rocks are some of the most beautiful and interesting rockd found in the Earth’s crust. Mini Me Geology’s sedimentary rock samples provide a wide range of sediment types, colors, and textures because they were made in rivers, lakes, oceans and deserts. Each sedimentary rock sample is individually packaged and comes with an information card to tell you about your new rock. Please note that we always try to have the largest samples possible, but are at times limited by the mines. Typical samples sizes are generally 1-2 inches in length or width but can vary based in availability and natural formation.