Ancient book covers as Russian jewelry art. In the early days the book was a valuable gift. Such books were incredibly expensive, each edition was limited, the book cover was a real piece of jewelry art. The book covers were made of leather, silk, wood, porcelain, decorated with silver, gold, enamel, precious stones - rubies, emeralds, sapphires. Each cover was unique, published only in several or even one copy. It made an indelible impression of wealth and greatness of the owner.