With the Rock Tumbler Gemstone Jewelery Maker you can change rough rocks into jewelry! Transforms rough rocks and minerals into smooth, shiny gemstones. Product includes: 4 oz gem stone, 1 bag of 1 course-Grind Powder, 1 bag of 2 Fine-Grind Powder, 1 bag of 3 Polishing Powder, 1 bag of 4 Final Polishing Powder, glue Metal Jewelry Accessories, UL Adaptor (no batteries required) AC adapter included, requires no batteries! Assorted colors, either blue or black. Ages 8 & up.