Young geologists and gemstone collectors alike are going to love the Kid Geologist’s STEM Rock Shiner. This special tool allows you to polish your rough gems into beautiful works of natural art. Provided are nine rough rocks to be polished, four sachets of polishing grit, a sieve, and a learning guide. You can now begin turning your amazing finds into properly illuminating and amazing pieces. There is nothing stopping you from enhancing your collection now!