The book "No. 309 Physical and chemical properties and processes of obtaining diamonds and other high-hard materials" by the authors Polyakov B. P. and Pavlova Yu. A. is a unique study that immerses the reader in the world of high technology and materials science This publication will become an indispensable assistant for students, graduate students and specialists in the field of physics, chemistry and materials science, as well as for anyone interested in modern achievements in the production of high-hard materials. The book details the physico-chemical properties of diamonds and other high-hard materials, such as cubic boron nitride and various composites. The authors, possessing deep knowledge and experience in this field, offer the reader not only theoretical aspects, but also practical recommendations for obtaining these materials. They describe synthesis processes, including high-temperature and high-pressure exposure, which makes the book particularly valuable for those developing new technologies in the field of materials science. Who can like this publication? First of all, it will be useful for students and graduate students of technical and natural sciences who want to deepen their knowledge in the field of physics and chemistry of solids . The book will also be of interest to researchers and engineers working in the production of high-hardness tools and materials, such as diamonds and their synthetic counterparts. In addition, it can attract the attention of science lovers who want to expand their horizons and learn more about modern technologies. The topics raised in the book cover a wide range of issues, ranging from the basics of physics and chemistry to the latest advances in the synthesis of high-hard materials. The authors emphasize the importance of diamonds in various industries, such as jewelry, medicine and industry. They emphasize that diamonds are not only a symbol of wealth and luxury, but also indispensable tools in surgery, as well as in the production of high-precision tools. The style of the authors is distinguished by scientific rigor, but at the same time they are able to make the material accessible and understandable to a wide audience. Polyakov and Pavlov are known for their work in the field of materials science, and their previous publications have already established themselves as authoritative sources of information. Their approach to the presentation of the material combines a deep understanding of the subject and the ability to convey it to the reader, which makes their books not only useful, but also fascinating. If you are looking for information on how diamonds and other high-hard materials are created, or want to learn about the latest scientific discoveries in this field, “No. 309 Physical and chemical properties and processes for the production of diamonds and other high-hard materials” will be a real find for you. This book will not only expand your knowledge, but also inspire new research and discoveries in the world of materials science. Do not miss the opportunity to immerse yourself in the fascinating world of science, which opens before you this unique work!