Spectra Glitter Sparkling Crystals are high-quality and are the perfect addition to any art project! To help satisfy a child's innate preference for things that shine, our hexagon-shaped plastic glitter crystals (0.040 size) are certified non-toxic and conform to ASTM D-4236. They're packed in convenient plastic dispensing jars with a variety of slot openings, making it easy to use without a lot of mess!