Eurographics Minerals 1000 Piece Jigsaw Box size: 10\" x 14\" x 2.37\". Finished Puzzle Size: 19.25\" x 26.5\". Of the approximate 4,000 minerals, each with their own characteristic chemical composition, highly ordered atomic structure, and specific physical properties, 40 of the most well known are illustrated. These include gold, diamond, sulphur, copper and quartz. Strong high-quality puzzle pieces. Made from recycled board and printed with vegetable based ink. This superior quality puzzle will delight and educate all at the same time. Getting stuck into a good jigsaw puzzle is a great way to while away a few hours. They can also be a fantastic way to keep the mind agile, and are a great hobby to take up both independently or as fun for all of the family. With a range of sizes and varying numbers of pieces, whether you want a quick puzzle or something more taxing, we have a variety to choose from.