National Geographic Rock Tumbler Refill Kit - Rock Tumbling Supplies including Rock Tumbler Grit and Polish Refill, Ceramic Media, GemFoam, 1.36 kg Madagascar Rocks for Tumbling, Jewellery AccessoriesPOLISH INCREDIBLE ROCKS FROM MADAGASCAR You'll have plenty of tumbling to do with 1. 36 kilograms of rocks from Madagascar. This rock refill pack can include rose quartz, jasper, and more. It's an awesome assortment of rocks you will treasure forever! HIGH QUALITY This rock polisher grit refill pack comes with enough high quality silicon carbide grit to put a dazzling polish on approximately 4 kilograms of rocks, gems, glass, and more IMPROVE YOUR