Each diamond polisher needs to analyse the rough stone to the best of his knowledge and choose the appropriate way how he will polish the stone to get the best result possible. This is determined firstly by the shape of the and secondly by the inclusions in the rough diamond. Every cutter will try to maximize the final size of the polished diamond.
The process of cutting and polishing diamonds has largely remained unchanged since the invention of diamond polishing in the 14th century. Before polishing was invented the diamond was cherished and praised for its hardness and surface reflection of light. Since the invention of diamond polishing, we have discovered that the light breakage and internal reflection creates the brilliance which is the main attraction of diamonds today.
Diamond polishing is a timely process, certain unique diamonds take years to polish as every step of the way is being checked and rechecked dozens of times. Once a part of the diamond has been removed it is gone forever. During the polishing process more than 50% of the weight of the rough diamond will be lost. If you would like to polish a 1ct diamond you will need a rough stone of at least 2.25ct.