Cut grade for fancy shapes mentioned online?

[diamante12]

How do online diamond retailers give Cut grades for fancy shapes? Considering that grading laboratories only assign Cut grades for round diamonds, I am wondering how online retailers determine a Cut grade for fancies.

Your input would be most appreciated.

Thank you!

 

[Dreamer_D]

Which online sites are you referring to? I suspect that each has its own criteria. That is why you cannot really take as face valid any claims of "ideal" etc by vendors. The only cut grades that matter are on the grading report, and those are only for RBs and princrss cuts by AGS.

 

[BAM54321]

Check out the knowledge section at the top of the page. I''m not sure how various sites go about grading the cuts of their fancy shapes, but there is information to be had in the knowledge section.

 

[Rockdiamond]

Interesting question.
The answer goes for actual "brick and Mortar" stores as well as online sellers.
There''s only industry accepted lab that grades the cut fancy shapes- and then only princess cuts- the lab is AGS.

What that means is that any of the sellers claiming "cut grades" on fancy shapes ( besides the AGS princess ones) is using terminology incorrectly.
Personally, it smacks of misrepresentation to me, but people can draw their own conclusions.

If a seller describes the aspects of the cut they find pleasing in a way you understand, and can see, it would seem to be a lot more honest to me.

What shape have you been looking at?

 

[stone-cold11]

Date: 12/12/2009 11:00:59 AM
Author: Rockdiamond

What that means is that any of the sellers claiming ''cut grades'' on fancy shapes ( besides the AGS princess ones) is using terminology incorrectly.

Actually, AGS grades the cut performance of emerald and oval too.http://www.agslab.com/product_diamond_quality_document.php

 

[Rockdiamond]

Interesting Stone- I had not seen that.

Still, any seller grading the cut fancy shapes they are offing without the AGS report is crossing a line IMO.

 

[ChunkyCushionLover]

Date: 12/12/2009 12:11:10 PM
Author: Rockdiamond
Interesting Stone- I had not seen that.

Still, any seller grading the cut fancy shapes they are offing without the AGS report is crossing a line IMO.

Sellers are free to assign cut grades and many do based on numerical proportions, however they are superficial and usually only consider depth% and table% and the limited information on a GIA report, therefore these cut grades are generally useless.

The problem is not the cut grade but how it was obtained and that the method and its inaccuracy is not well explained to consumers.

The AGA old cut grades consider more important criteria and serve a purpose for fancy diamonds as another tool that consumers can use but it should be a rejection not selection tool. http://www.gemappraisers.com/oldcutgrade.asp
No matter what fancy diamonds and pretty much any diamond should be viewed by images, Video, ASET, Idealscope and pictures for selection and then ultimately viewing in person for final selection.

Some consumers are satisfied with making a decision based on the Optical tests and video and or photographs alone, while others require the last step of viewing in person before dropping the bucks.