Although atoms are the smallest unit of matter, these earrings are sure to make you stand out! This is the perfect gift for anybody who loves science! Made from sustainably sourced wood and 90% recycled display cards. Laser-cut wood Stained with a water-based dye. Ear wires are silver-finished 304L stainless steel, hypoallergenic, and enhanced with a smooth and consistent electrophoretic coating that resists tarnishing.