Edu Science Rock Tumbler - Toys "R" Us

Polish stones to a smooth, shiny finish and uncover their amazing colors and patterns with this Edu Science Rock Tumbler that turns rocks into semi-precious gem stones! Tumbling is easy; just add rocks, water and grinding powder to begin. The grinding powder duplicates the erosion process that takes thousands of years to happen in nature. Then select the length of time to tumble your rocks. The longer you tumble your rocks, the shinier your gemstones will be. Use your finished gemstones to create beautiful pieces of jewelry! The rock tumbler comes with 8 oz. of gemstone rocks, 2 bags of coarse grind powder, 2 bags of fine grind powder, 2 bags of polishing powder, 2 bags of final polishing powder, 3 key chains, 12 jewelry setting holders, glue, one 18-inch silver-tone necklace chain, 4 adjustable rings, 3 pairs of hanging earring wires, and 12 jump ring connectors.