3D crystal puzzle is an independent product in the world. The latest innovative design can exercise people's thinking and organizational skills. It is a novel style and design, a unique mode of thinking. It will become a trendy toy that has become popular in Europe, America, Hong Kong, Japan and South Korea. This toy will definitely give you space for brain thinking and work. 3D crystal puzzle is made of crystal clear crystal film, each one is different. The product consists of a different number of films and it is necessary to actuate the brain to combine it into a perfect three-dimensional model. After you finish it, you will have a great sense of accomplishment.