Diamond what is table

Depth and Table Percentage The depth and table percentage of a diamond are the two factors that determine a diamond's cut.

Calculating Depth Percentage In a diamond grading report, table percentages are calculated by dividing the table diameter by the average girdle diameter. We're a match made in email heaven. Enter your email address. Craft a ring Preset rings Gemstone rings.

Loose diamonds Natural diamond Lab diamond. Deliberately Different. Our story FAQ's Education. A lower depth will create a diamond that looks larger when viewed from above, as more of the weight is located in the crown of the stone.

There is a limit however, and a diamond with a depth that is too low will not make a diamond appear larger, rather it will be dull and lacklustre, making it appear smaller. When it comes to depth, it really is about balance and finding the sweet spot. The table is the largest facet of a diamond; located at the top of the diamond when the stone is face up , it plays a vital role in light performance and thus has a huge impact on a diamonds brilliance.

In a well-cut diamond, the table facet will refract light rays entering the diamond and allow reflected light rays from the pavilion facets and back into the eye. A larger table percentage does not necessarily equal a more brilliant diamond as there are multiple factors which dictate the final fire and brilliance of a diamond. The bezel facets of a diamond are where we observe the most fire; an overly large table limits space at the crown area meaning the upper girdle and bezel facets have less surface area.

This lack of surface area decreases dispersion and will diminish fire. A smaller table will allow the girdle facets to disperse light, however it will be detrimental to the brilliance of the diamond. The culet of a diamond refers to the bottom tip of the stone. For instance, in shallow diamond cuts, light often travels through the stone significantly fast before leaving it via the pavilion without creating any reflections.

But, when the cut is too deep, the diamond may have poor sparkle, causing it to appear deceptively smaller. The depths are usually graded, ranging from Poor to Excellent. The first measurement, expressed in millimeters, denotes the total height of the diamond; while the second has to do with the depth percentage of the diamond.

To calculate the depth percentage of a diamond, you would be required to divide the total height by the average diameter of the stone following which process you would multiply the answer by While there are no ideal diamond depths, there are certain recommended depth ranges that might guide you as you shop for a suitable gem. The following are the ideal diamond depth ranges for the popular diamond shapes out there:.

As highlighted before, the depth of a diamond is crucial in helping customers grab hold of the best diamonds for them. But how do you leverage this critical aspect of a diamond structure while shopping for your dream gemstone?

First, you would need to determine the diamond cut that you desire. If, after thoroughly skimming through it, you realize that the depth percentage is between 59 and A diamond table is the flat, topmost, square-shaped facet of a diamond and is so named due to the crucial position that it occupies, and the role it plays, in the diamond structure.

The fundamental function of a diamond table is to refract the rays of light that pass through the diamond and to direct the said rays to different facets of the stone. The main purpose of the table facet is to reflect rays entering the diamond and allow them to be reflected back from the pavilion. This is not the case, as there are other factors affecting the overall brilliance and fire of a diamond. Fire is best observed at the bezel facets of a diamond.