Tumble, polish and discover 8 of your very own gemstones with The Young Scientists Club Gemstone Treasures! This STEM activity kit has everything you need to become a real geologist and see semi-precious stones, like blue apatite, turquoise, amethyst, and tiger eye, up close and personal. Place rough stones and a little bit of water into the rock tumbler, then turn the handle to reveal polished treasures in minutes — it's never been easier to tumble your own gemstones! Use the double-sided brush & pick tool and polishing cloth to get your premium stones squeaky clean, then grab the magnifying glass, and use the 2-in-1 Geology Game & Poster to identify them and learn what makes each unique! Challenge your friends to a round of bingo and memory using the included game cards and board game, then collect and display your gems for all to see. This science kit helps develop critical thinking skills, identification, curiosity, cause & effect, and so much more. Recommended for ages 6 and up.