Packed full of fascinating facts, awesome activities and exciting illustrations, this is the ultimate kids` guide to crystals and precious gems. Inside this book, you`ll find everything you need to know about why gemstones are formed and how they have been valued throughout history. The poster pictures precious minerals on one side, while the other side gives facts on diamonds – from how they are mined to the world`s most famous diamonds. The pack also includes over 100 gemstone stickers. Guarantees hours of fun for budding gemologists aged 7 and up.