But when a diamond proportion is perfectly balanced the diamond is able to take in maximum light and reflect it back beautifully.
Best diamond depth and table.
For round cut diamonds i always look for a table between 54 to 57 and a depth between 61 and 62 5.
To find the depth percentage divide the diamond s physical depth measurement by its width.
Using the recommended table and depth percentages above you can easily rule out diamonds that aren t well cut.
However the ideal depth is between 62 9 and 59 5 percent.
Table percentage is calculated by dividing the width of the table by the overall width of the diamond.
Also depth is deemed acceptable within a certain range with any value between 56 5 and 65 percent considered good.
An ideal appearance and maximum yield.
Besides table and depth proportions i also follow a list of ideal proportions in crown and pavilion angles here.
You will notice two measurements of the depth on your diamond grading report.
Depth of the diamond divided by the overall width of the diamond.
Here s a 1 21 carat marquise cut with a excellent depth at 59 7.
This happens because when diamond has a very high depth percentage most probably it will be too deep on the contrary very low depth makes the diamond shallow.
The depth of the diamond is measured from the culet to the table and is noted in millimetres.
For a marquise diamond an ideal depth range is between 58 and 62 percent of the total width of the diamond while a very good cut will have a depth range of 56 to 57 9 or 62 1 to 66 percent.
One will record the actual depth measurement in millimetres the other is the depth percentage which notes how deep the diamond is in relation to its width.
Under 56 or over 64.
The ideal table percentage will vary based on the shape of your diamond.
The ideal diamond proportion depends on the diamond shape you choose.
Larger tables show more white sparkle or brilliance and smaller tables show more colored sparkle or fire.
Diamond table depth play huge effect on a diamond cut and actually might change it some diamonds get lower higher cut grades based on the table depth percentage they have.
Basically any diamond with a score below 2 is worth considering and any diamond with a score above 2 should be discarded.
The table of your stone is the large flat facet on the top of your stone.
Even then there is no definitive ideal proportion for every shape.
What is diamond depth.
When polishing a rough diamond cutters must find a balance between an optimal cut i e.
