Imagine taking dull, ordinary rocks and magically transforming them into sparkling gems…now you can! With this tumbling set from Discover with Dr. Cool, making beautiful gemstones is easy: Just add the polishing grit, water, and unpolished stones into the machine, set it, and wait. Within a few weeks you’ll have your very own gleaming, beautiful gems! There is no better way for boys and girls to learn about geology. This science kit will provide hours of fascinating science fun and comes with everything you need to start exploring the exciting hobby of rock tumbling. This Rock Tumbling Science Kit includes: High-quality tumbling machine Half pound of semi-precious stones including amethyst, quartz, tiger’s eye, jasper, agate, and more 4 types of polishing grit Jewelry fastenings Tumbling instructions With the included jewelry fastenings, kids can even make their very own custom jewelry. Just mount the polished gems into the fastenings and they’re ready to wear! A Brand You Can Trust Discover with Dr. Cool is a name parents trust. Founded by a teacher and a life-long rock hound back in 2009, Dr. Cool has won over 100 awards for the play value, educational content, and overall quality of their toys. These awards include: 10 Best Toys for Kids – Dr. Toy Kid’s Product of the Year – Creative Child Magazine Award of Excellence – Parent Tested, Parent Approved Best of the Year – Family Review Center Brain Toy Award – Academic’s Choice Brain Child Toy Award – Tillywig Toy Teachers Choice Award – Learning Magazine All Discover with Dr. Cool products are backed with a 100% satisfaction guarantee, so you know you’re giving a quality gift that any child will love! Science doesn’t get any cooler than this!