DK Pocket Eyewitness: Rocks
Crack the mysteries of rocks and dig out their sparkling secrets in this visually stunning pocket guide, packed with amazing photos and dramatic facts. From the hardest stone to the most beautiful jewels, find out why sapphires are blue, what marble is made of and how granite gets its legendary toughness. Find out where and how rocks and minerals form, and what creates their hardness, colour and lustre. You’ll find the best topics, the best facts and the most breathtaking photos in this wow-factor series: a fresh look at it all!