We have a 12′ sluice system for rock and gemstone panning. This is a great item to rent for school projects. The participants purchase a bag and it is full of sand, dirt, gemstones and raw rocks like: lions eye, amethyst, turquoise, jade, quartz, slate, greenstone and more. The participant uses a screen sifter in the sluicing system. Imagine the excitement of finding stones you have never seen before. The system comes with two large rock and gem posters. Once you have sifted through the bag of goodies, take the stones to the poster and identify them. This is a hands-on geology lesson.