National Geographic Rock Tumbler Kit – Hobby Edition Includes Rough Gemstones, and 4 Polishing Grits, Great STEM Science Kit for Geology Enthusiasts, Rock Polisher for Kids and Adults

– Complete rock tumbler kit for creating polished gemstones
– Includes tumbler, polishing grits, sifter, real rough gemstones, and learning guide
– Ideal gift for girls and boys
– Allows kids to start a beautiful rock collection
– Accessories for polishing gems and creating homemade jewelry
– Features a durable tumbling machine with powerful motor, automatic shutoff timer, and noise-reducing barrel
– Kit comes with assorted stones, polishing media, and jewelry fasten