NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit  (Multicolor)

Rock tumbling is tons of fun and a great way to start a beautiful rock collection. This set includes all the accessories you�ll need to start polishing dazzling gems. Kids can use the included jewelry fastening to create beautiful homemade jewelry! Contents and Features: � High-quality tumbling machine with powerful motor that will last for years � Automatic shutoff timer so you can set it and forget it � Noise reducing leak-proof barrel with stainless steel lid � Half pound of gemstones from around the world (9 types) and four grades of grit � Jewelry fastenings so you can create your own unique jewelry � Full-color information guide with cool facts about each of the gemstones included � Easy-to-follow rock tumbling instructions Rock tumbling is a fun activity for children of all ages and promotes an interest in geology and science.