A unique encyclopedia of practical skills for those who are attracted by the mysteries of geology! This illustrated guide is very convenient to take on hikes. The book contains detailed information about more than 290 types of minerals and rocks, detailed photographs of each of them, and all the stones in it are divided according to a specific geological parameter - the so-called color of the feature. All this in a complex will allow you to quickly and accurately find out the belonging of any mineral to a certain species!