Bursting with brilliance and fire an oval cut diamond is exquisite and unique.
Oval diamond table and depth.
The depth of a diamond is its height in millimeters measured from the culet to the table.
Summary recap and the best places to buy an oval diamond ring.
Oval shape diamonds of shorter length and greater width display a smaller bow tie affect due to resulting steeper pavilion angles.
Optimum table depth for oval diamonds.
Based on the heatmap diamond cutters seem to prefer a depth range of 60 64 and a table range of 56 62.
54 to 58 depth.
Diamond table and depth affect a diamond s overall cut grade.
G or better clarity.
Within a range of 1 30 to 1 35.
For an oval cut diamond an ideal depth is less than 68 percent.
Below is a heatmap showing the counts of all depth and table combinations for oval diamonds available online at james allen and blue nile.
The accredited gem appraisers aga published ideal cut specifications for oval brilliant cut diamonds back in the 1980s.
Of all a diamond s 4 cs cut is the most complex and technically difficult to analyze.
For an asscher or emerald cut diamond an ideal depth is between 61 to 68 percent.
The elongated design makes it appear larger than other shapes of the same carat weight.
Oval diamonds are not graded by the gia for cut quality.
62 to 66 polish symmetry.
In order to end up with a beautiful oval diamond engagement ring it is important to make sure your jeweler understands optimum oval cut specifications.
Similar to other fancy diamond shapes preferences of an oval cut diamond also vary by length to width ratios of the cut.
To recap here are my recommended guidelines for buying an oval cut diamond.
Very good or excellent length to width ratio.
Table depth proportions of a diamond refer to the diagram of a diamond above to see where a diamond s table depth crown height and girdle thickness are measured.
The oval cut diamond.
For oval diamonds the ideal diamond depth is between 58 and 62 percent while the ideal table percentage is between 53 and 63 percent.
Brighter blue indicates more diamonds having that specific depth and table combination.
For example an oval cut like this 1 01 carat diamond looks quite large in its yellow gold halo setting a 1 carat round diamond in a similar setting would look.
A shorter one carat oval shape diamond with a length of 5 millimeters and a width of 4 6 millimeter with an equal depth percentage of 65 would have a deeper total depth of 2 9 millimeters.
It is considered a classic oval cut diamond if its length to width ratio is 1 50 or in the approximate range of 1 36 1 60.
For example see this excellent emerald cut diamond with a 64 6 depth.
