Diamond Depth And Table Percentage

However the ideal depth is between 62 9 and 59 5 percent.

Diamond depth and table percentage.

Some vendors will give a misleading outline of depth percentage casting a wider bracket. Total depth depth average girdle diameter x 100. Using the recommended table and depth percentages above you can easily rule out diamonds that aren t well cut. For a round diamond an ideal depth percentage is between 59 and 62 6 percent this very nice 1 30 carat round cut for example has a depth of 61 8.

The range depends on exactly what sort of shape your diamond is. Some believe it is within the 58 60 range while others suggest that diamonds with a percentage of 62 9 59 5 are most desired. The table percentage of a round brilliant diamond is the average of four table measurements from bezel point to bezel point expressed as. Measurement is the depth percentage of the diamond ideal diamond depth percentages to calculate the depth percentage of a diamond you would need to divide the total height by the then multiply the answer by 100.

For a princess cut diamond choose a diamond with an ideal depth of 68 to 75 percent. The total depth percentage of a round brilliant diamond is the table to culet depth expressed as a percentage of the average girdle diameter and reported to the nearest tenth of a percent 0 1. The depth of a diamond might also be called the height. For example a round diamond wants to have a table percentage of 54 to 57 as well as a depth percentage of 61 to 62 5.

Depth percentage is the diamond s depth divided by the width of the diamond. The total depth percentage is a calculated value obtained by the following formula. Like with a diamond s table jewelers grade a diamond s depth based on its depth percentage. There is no industry wide agreement on the absolute ideal depth percentages for a round brilliant diamond.

This second measurement of depth is measured in relation to the width of the diamond s table and as the name implies it is a percentage and it is measure in relation to 100 percent depth percentage depth millimetres diameter. The measurement is then divided by the average girdle diameter of the diamond and then the resulting figure is multiplied by 100 then the final figure is rounded to the nearest tenth of a percent. With diamonds there are ideal ranges of values for both depth and table but there is a major caveat. For round cut diamonds i always look for a table between 54 to 57 and a depth between 61 and 62 5.

The total depth percentage of the diamond is determined by first measuring the gem from table to culet. Besides table and depth proportions i also follow a list of ideal proportions in crown and pavilion angles here. To find the depth percentage divide the diamond s physical depth measurement by its width.