Includes: amethyst, jasper, agates, and more.
5"D. With the Smithsonian classic rock tumbler, you can change rough stones into beautiful high luster gemstones! Smithsonian Rock Tumbler with Bonus Refill Set includes: rock tumbler machine, rough semi-precious stones, grit, polish, jewelry settings, and detailed instructions with a bonus refill pack.3"W x 8.Dimensions: 4"H x 4.