When you’re not solving it, you can enjoy it as décor. With just 7 pieces—5 triangles, a square, and a parallelogram— you can create more than 530 different squares, yet making even one is a challenge. This version is pleasing to the eye and the hand as you manipulate solid semiprecious Andean gemstones including rhodonite, celestine, serpentine, jasper and soapstone. Or think outside the box and come up with other shapes. Hardwood frame. About 5" square, 1" high. Comes with instructions. Handmade in Peru.