Why “Cut” is the most important C

In 1919, a Belgian mathematician, Marcel Tolkowsky, who came from a family of diamond cutters, published a Masters thesis on the best proportions for round brilliant diamonds. This work formed the basis of the defining proportions for what are now known as "Ideal cut diamonds". It must be noted however that different grading laboratories allocate [...]

Why “Cut” is the most important C2017-11-28T14:23:42+00:00