DIAMOND COLOR
Most diamonds range in color from colorless to slightly yellow. The color grade is determined by comparison with a series of master stones - the rarest and most expensive are diamonds in the colorless range graded D,E and F on a scale that descends to Z.
Amore Diamond Document assigns a color grade for diamonds in the D-Z range with the diamond face-down and viewed through the pavilion. This is because size, shape, cut quality and the presence of fluorescence can influence visible face-up color. In fact, lighting, mounting choice and even the clothes one wears have an impact on color, so Amore Diamond Document uses the most neutral environment possible to ensure accurate and consistent results.
How does the Amore Diamond Document Grade the Color of Diamonds?
What the Amore Diamond Document does is to grade the degree of colorlessness of the diamond. Since the degree of colorlessness is practically impossible to distinguish by the naked eye, master-stones are used for comparison.
The master-stones are placed in a row on a color paper facing down from D to Z. Since there can be a small range of qualities within a color grade, the master-stones show the "worst" of a certain grade.
Then, the gemologist will place the subject diamond in between two diamonds and see if it is better or worse than the diamonds that surround it and according to that he will move it up or down the scale until he reaches the point where the diamond on the left is better than it and the one on the right is worse – that place will mark the color grade as the diamond on the right (remember that the one on the left represents the worst of its kind).
What the Amore Diamond Document does is to grade the degree of colorlessness of the diamond. Since the degree of colorlessness is practically impossible to distinguish by the naked eye, master-stones are used for comparison.
The master-stones are placed in a row on a color paper facing down from D to Z. Since there can be a small range of qualities within a color grade, the master-stones show the "worst" of a certain grade.
Then, the gemologist will place the subject diamond in between two diamonds and see if it is better or worse than the diamonds that surround it and according to that he will move it up or down the scale until he reaches the point where the diamond on the left is better than it and the one on the right is worse – that place will mark the color grade as the diamond on the right (remember that the one on the left represents the worst of its kind).