Apparatus and method for cone shaping the crown and pavilion of

Apparatus for cutting a stone member so as to have a curved surf

Burnishing diamond

Centering and working gemstones

Diamond cutting method and diamond provided by the method

Diamond cutting method and new-cut diamond shape

Diamond cutting method, enneahedral-cut diamonds and...

Diamond sawing process

Fluted diamond drill

Gemstone and corresponding method of cutting

Gemstone drill

Machine for cutting precious stones

Machining apparatus utilizing oscillation of tuning fork

Method and apparatus for bruting precious or semi-precious stone

Method and apparatus for placing identifying indicia on the surf

Method for cutting concrete into predetermined shapes

Method for cutting natural and/or man-made diamonds

Method for preparing a diamond

Method of machining hard and brittle material

Process for cutting a diamond to provide an invisible mounting