Table Round Cut Diamond

The basic or full table cut was developed from the point cut a basic octahedral shape by truncating the uppermost point of the octagon leaving a flat table at the top of the stone a.

Table round cut diamond.

A study of the reflection and refraction of light in a diamond. Table percentage is calculated by dividing the width of the table by the overall width of the diamond. Below are the best estimates for lower prices of the fancy cut diamonds based on the above price indexes. A very good cut can have the table of 52 to 53 percent or 58 to 60 percent.

Using the recommended table and depth percentages above you can easily rule out diamonds that aren t well cut. Besides table and depth proportions i also follow a list of ideal proportions in crown and pavilion angles here. The ideal table percentage will vary based on the shape of your diamond. With modern diamond cutting technologies round cut diamonds are even more brilliant than ever before.

A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut cut does not refer to shape pear oval but the symmetry proportioning and polish of a diamond. The original table cut diamond is one of the earliest diamond shapes and can be seen as the first step towards the diamond shapes that are popular today. The popularity of round diamonds is nothing new. It takes a bigger larger rough diamond to cut it into a round diamond than it does to cut it into a fancy cut diamond such a cushion cut diamond.

The holloway cut adviser u s. Dividing the width of the table by the overall width of the diamond you can find the table percentage. For round cut diamonds i always look for a table between 54 to 57 and a depth between 61 and 62 5. This means if it is cut poorly it will be less luminous.

For example the ideal table for round cut diamonds is between 54 60 percent while the ideal dimensions for emerald cut diamonds puts table percentage between 66 72 percent. For a princess cut diamond. Table depth other specifications for ideal round cut diamonds round diamonds are the only diamond shape that the gia grades for cut. The cut of a diamond greatly affects a diamond s brilliance.

The shape gained traction in 1919 the year that marcel tolkowsky published his thesis titled diamond design. For a limited time the hca is now available free for all stones in our diamond search results just click on the hca column of the diamond. Round cut diamonds are generally more expensive than other fancy cut diamonds. For a round cut diamond an excellent table range is 54 and 57 percent like this beautiful 1 05 carat round cut with a table of 57.

Patent 7 251 619 is a rejection tool to help you narrow your search for only round diamonds potential light return fire scintillation and spread based on the rounded proportion information from a grading report.