Keep on rockin’ and rollin’ with this refill pack for the Thames & Kosmos Rock Tumbler. This pack includes a one-pound assortment of natural rock samples — including tiger’s eye, aventurine, rose quartz, and more — as well as four polishing grits. Use the included jewelry settings to create accessories from your specimens.

• Ages: 8+
• Piece Count: 10
• Product Dimensions: 4.5 x 9.6 x 2 in.