Rock Tumbler Refill &ndash; Rough Jasper of Nine Varieties (1lb) PREMIUM JASPER ASSORTMENT  One pound of raw jasper: Mookaite, Kabamba, Zebra, Picture, Red, Dalmatian, Green Zebra, Polychrome, Yellow POLISHING GRIT  Four stages of grit: coarse, medium, fine, polish. The perfect medium to turn your stones into gemstones! MAKE YOUR OWN JEWELRY - We've included jewelry fastenings (2 necklaces, 2 earrings, keychain, and ring) so you can design your own custom jewelry LEARN ABOUT JASPER: Discover with Dr. Cool's adventure guide is written by teachers and will teach you many amazing facts about these 9 incredible jasper varieties 100% SATISFACTION GUARANTEE - Join the millions of parents who have chosen our award-winning science toys and experience the Discover with Dr. Cool difference!