Judging Diamond Cutting

For hundreds of years of diamond formed only (cutting) is simple. Until in 1919 a mathematician to formulate a way to hone any diamonds that are now regarded as the ideal diamond shape. The first stage of assessing the diamond starts from the upper face.

Do it without using a magnifying glass, but only with the eyes. Note the luster (brilliance), whether each part reflects the light into the eye. Clay is also in the middle of the diamond, the dark impress (nail head) because the pavilium too high or middle section is a circle of white-fish eye because this section is too shallow.

Do not dwell only on the figures presented in the certificate. Let's say, a diamond with a high overall 59-60% is still considered to be ideal, that in fact this figure does not show a good proportion of these diamonds. High crown with a shallow pavilium have 59-60% higher total diamond look so fish eye or pavilium long thin crown. The second reality, not all sellers understand the proportions of each diamond they sell. To be sure, check before buying a diamond that will be the jewel in the laboratory for analysis.

Prospective purchasers should give priority, that the tables are presented merely the proportion of comparison. During the proportion of diamonds purchased are still in the range table, then the diamond is said to be good. Although, the final decision on the consumer.

Here's how to assess the pieces that will be featured in an article chain. The first is to estimate crown angle (crown angle)

Side View (Profile). The angle can be measured from the crown side and clamp the top and bottom of diamonds, then use a ruler or matchbox 90-degree angle with the waist. Imagine the angles are divided into 3 parts, 1 / 3 of the slices (facet) of the crown near 34.5 degrees angle. When you slice the crown more than 1 / 3 of the crown angle of more than 34.5 degrees, and if smaller than 1 / 3 of crown is a crown angle of less than 34.5 degrees.
Visible face (Face Up). Through the facade of the position, the angle of the crown can also be measured by looking at the reflection shadow pavilion facets on the bezel facet at the wedge-shaped kite.