A Great Way To Introduce Kids To The Wonder Of Gems And Minerals, This Gemstone Mini Dig Kit From National Geographic Lets Them Make The Discovery Themselves. Simply Use The Included Digging Tool And Brush To Excavate A Genuine Gemstone Hidden Inside A Plaster Mold. Which One Will It Be The Amethyst, Rose Quartz, Or Quartz Any One Of These Gemstones Will Make A Sparkling Addition To A Growing Rock Collection. As A Bonus, This Stem Educational Toy Comes With A National Geographic Gemstone Learning Guide That Was Written By Teachers.