Review om the book by G. A. Yurgenson “Emerald, aquamarine, heliodor...”

Resumo

The book by G. A. Yurgenson “Emerald, aquamarine, heliodor…” devotes to the popular scientific description of crystal forms, composition and structure, the history of knowledge and use of precious varieties of beryl. It examines the nature of their colour, formation conditions, and the most important deposits. The original information obtained by the author about beryl deposits in Russia and Afghanistan is included. The book is illustrated with photographs of beryl samples stored in the world’s greatest museums. The book is definitely an important contribution to the knowledge of beryl and can be recommended both to geologists and gemologists, and to a amateur mineralogists.