Ags Ideal Cut Diamond Proportions

Hi danny i ve been reading your blog for awhile now and would appreciate it if you could explain what is a super ideal cut diamond i have seen the term used on different web sites with descriptions which vary from anything which has been graded with an overall cut grade of gia excellent or ags ideal to those cut within the center region of the range designated for the zero ideal cut.

Ags ideal cut diamond proportions.

Learning by example is the easiest way to understand what makes for a good princess cut. The seller is asking for 8175 for a 1 33 round gia vs2 i color triple ex stone no fluorescence. Super ideal cut vs gia excellent cut diamond. 1 ideal proportions for a super ideal cut diamond.

The ags diamond cut grade chart also includes an ideal grade. These diamonds serve as positive examples of what ags considers to be well proportioned stones with the best light performance. The proportions of the diamond are expressed slightly differently and this is one of the differences between the two gemological laboratories. Ideal cut diamond proportions and brilliance.

It was synonymous with ideal cut. The best cut diamonds will sit in the intersection between gia excellent and ags ideal. Ags 0 ideal princess cut. As you can see both laboratories gave the diamond the same carat weight color clarity and overall cut grade of ags ideal gia excellent cut.

So if you are in the market for a super ideal cut diamond you need to know how to separate the wheat from the chaff. The diamond i am looking at meets most of your gia ideal cut diamond proportions for buying super ideal rounds but i wanted your opinion on whether i should keep looking or settle on this diamond. Thus any diamond that is within these suggested proportions will be much more likely than a diamond outside these proportions to exhibit a very appealing light performance. Ags 0 s cost as much as 10 more than same grade of gia diamond.

When looking at ags diamonds we recommend only considering ideal cut diamonds for the best quality. The top grade was ags 0 and the worst was ags 10. James allen true hearts princess cuts are all ags 0 ideal diamonds. The american gem society lab ags began proportion based cut grading in 1996 aga started earlier based on tolkowsky proportions.

Please note that gia does not assign a cut grade to fancy cut stones such as princess cut or cushion cut yet but still these proportions are critically important in analyzing the cut. For one thing the suggested diamond proportions are even stricter than the proportions demanded by gia or ags for the best cut grade. Cut quality is graded by the ags as ideal excellent very good good fair or poor. This article has two sections.