National Geographic Rock Tumbler Refill Kit - 2.26 kg Mix of Rocks for Tumbling and Rough Gemstones - Rock Tumbler Supplies include Rock Tumbler Grit and Polish Refill, and Unpolished Rocks

ENORMOUS VARIETY - This rock tumbler refill kit has 2.27 kilograms of unpolished rocks and gemstones consisting of 906 g gemstone mix, 453 g agate mix, 453 g Madagascar mix, and 453 g jasper mix ROCK POLISHING GRIT - There are 20 total rock tumbler grit packets in the kit, enough for five complete tumbling cycles with any rock tumbler JEWELLERY SETTINGS - Once your rocks are polished, use the 5 included jewellery settings to create beautiful keepsakes or use the included storage pouch to keep your favorite specimens all in one place DETAILED LEARNING GUIDE - The learning guide includes polishing instructions along with fascinating information about the stones in the kit RESPECTED QUALITY - National Geographic is proud to provide only the highest quality STEM toys and all our kits are backed by our 100% satisfaction guarantee, Manufacturer: JMW Sales, Inc.