Blue MarbleNATIONAL GEOGRAPHIC Rock Tumbler Ceramic Pellets - 1.5 lb Ceramic Media for Rock Polisher, Use with Rock Polishing Grit, Protects Rocks, Improves Tumbling, Reusable, Rock Tumbling Supplies

NATIONAL GEOGRAPHIC Ceramic Media for Rock Tumbling – 1.5 lb Ceramic Pellets, Tumbling Media for Rock Polisher, Use with Rock Tumbler Grit, Protects Rocks, Reusable, Rock Tumbling Supplies

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

National Geographic Rock Tumbler Refill Kit - 1 Lb. Jasper Rocks for Tumbling - 8 Varieties Including Mookaite and Kabamba - Rock Tumbler Supplies Include Rock Tumbler Grit and Jewelry Accessories