This rare book contains a detailed treatise on the different methods used for machining diamonds and gem stones in an industrial production. Written as a more scientific treatment of the art of cutting and polishing hard metals, the authors aim in collating the information contained herein was to bring before the public a general survey of modern methods of machinery, i.e. splitting, cleaving, bruting, grinding, and polishing, of flat and curved surfaces. Chapters contained within this book include: Technology of Matching Methods, Dividing of Diamonds and Gem Stones, Bruting, Cutting and...