This range is very strict and combines the best in brilliance and fire. Technically, the head of the class.

This range is also of great beauty yet slightly more flexible regarding percentages. Many experts prefer the appearance of this range to Ideal.

This range is balanced between precise proportions and price considerations. Viewed by many as the best overall value in beauty and price.

When a diamond is cut to proper proportions, light is reflected from one facet to another and then dispersed through the top of the stone. Within the Well Cut standards are the Diamonds.com sub categories of Ideal, Excellent, and Very Good.

When the cut of a diamond is too deep, some light escapes through the opposite side of the pavilion.

When the cut of a diamond is too shallow, light escapes through the pavilion before it can be reflected.

The cut, or proportions, of a diamond is measured in percentages relative to the diameter of its girdle. The girdle diameter of each diamond is always considered 100%. Example: The girdle of a diamond measures 10 millimeters (100%). The table measures 5.6 millimeters. The total depth measurement is 6.1 millimeters. The diamond would be described as having a table of 56% and a depth of 61%. The table and depth percentages are the key to determining good proportions.