Non-Toxic Material: Made of eco-friendly premium resin, these diamonds are odorless, non-toxic and safe for anyone who wants to learn diamond painting, including children. Add More Fun: The diamond painting set is the perfect toy for kids, it not only relieves stress, but also develops patience, improves hands-on ability, and enhances color perception. Diamond painting is also a perfect DIY family art activity where kids can complete diamond painting with their parents and have fun with diamond painting. Wide Application: This diamond sticker can not only be used as a toy, but also can be used as a trinket for everyone to decorate their lives. You can stick it on various places such as notebooks, pencil cases, mugs, toys, refrigerator doors, phone cases, walls and anything else you want to decorate.