Stones are almost ubiquitous on our daily paths and are often barely noticed. However, a closer look is certainly worthwhile, as stones are fascinating witnesses of our Earth's history. Geology professor Patrick De Wever provides us with this pocket guide, an ideal tool for easily identifying the 70 most common rocks and minerals. On colorfully illustrated double pages, you will find the essential information about the appearance, age, and use of each stone. This way, every walk can quickly turn into a geological exploration! Features: fully illustrated in four colors.