The publication is filled with useful information and interesting facts about minerals and rocks that surround us not only in nature, but also in the city. The author teaches children to look carefully around not only at the sea or in the mountains, but also in the subway, in buildings, on streets to identify types of minerals. Indicates the places where you can find various rocks and minerals, talks about their differences from each other, their use by humans, gives a historical excursion and gives interesting stories and legends.