Treasures of the EarthDig down into the history of rocks, minerals, and other treasures, and uncover the stories behind these marvellous materials. What treasures could be lying under your feet? From dazzling gems to beautiful buildings, this book is filled with rocks and minerals, each one with a tale to tell. What gem was more precious than gold to Chinese emperors? Who suffered the curse of the Hope Diamond? And why did Burmese soldiers insert rubies under their skin