Principles and methods of marking for large stones on various surfaces The basic principles of the initial stage of preparing a landing place Problems, methods of solving them and peculiarities of work with stones having angles (princess cut, marquise, pear, etc.) Setting large stones in the body of the item without casts. Piecing stones in castes, followed by edging Krappan setting, peculiarities of stone placement and design of krapans Mirror deep trimming around a stone Production and use of special forms of files and tools for setting.