Round Brilliant Diamond Depth

For a round diamond an ideal depth percentage is between 59 and 62 6 percent this.

Round brilliant diamond depth. When you set out to buy a diamond be it for an engagement ring an anniversary necklace or a pair of earrings to celebrate a graduation there s quite a bit more to consider than just how shiny it. The diamond s depth percentage is the ratio of the diamond s diameter compared to the diamond s total depth the measurement of the table to. On a modern round brilliant cut diamond the table is one of 58 facets on the surface of the diamond. Diamond depth percentages in round brilliant cut diamonds.

In terms of cut a total depth of 59 62 5 and a total table of 53 58 5 is preferred in round brilliant cut diamonds. In a grading report there are normally two measurements of depth. The depth of a diamond is its height in millimeters measured from the culet to the table. As the top facet the table lets light into the diamond and refracts it towards the facets on the top and sides creating its unique sparkly appearance.

It is widely misconceived that a larger table percentage would make a round diamond more brilliant than one with a smaller table. Total depth depth average girdle diameter x 100. See the chart below for detailed information. 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 total depth percentage is a calculated value obtained by the following formula.