OLDCUT DIAMONDS AND RECUTTING CALCULATION  


There are several cases when recutting of a diamond is desirable: the stone is unproperly cut, has distorted geometry features or irregular proportions, has an old cutting style, or is badly damaged. Recutting can make such a stone more attractive. Sometimes, recutting also improves clarity. It should be noted that recutting is always accompanied by a more or less significant weight loss. Since weight is one of the criteria determining diamond price, recutting is not always profitable.
Recutting results in a decrease in the total depth or diameter of a stone (sometimes, both parameters). Before recutting, the following main questions should be answered:
Appraisal of oldcut diamonds, stones with significant proportion and symmetry distortions, and damaged stones can be performed by the recutting calculation method. The diamond price is derived as that of the stone which can be obtained as a result of recutting. Round or near round diamonds, considered as candidates for recutting, can be divided into four categories:
Fancycut stones are also recut in some cases. The formulas given below can be used for the estimation of the weight of a recut diamond. If the size of the future diamond is determined by its diameter, the total depth of the stone may vary depending on accepted standards or client requirements. Thus, the coefficients in the formulas can be changed to select desirable proportions for the future diamond. 















