Diamond Guide, Information and Buying Tips for Loose Diamonds and Engagement Rings

Go Back   Diamond Forums @ Diamond Info.org > Diamond Forums > General Notices, Feedback & Suggestions

Thread Tools Display Modes
Old 08-02-2011, 07:08 AM   #1
Diamond Rookie
Join Date: Aug 2011
Posts: 1
Rep Power: 0 Moskva777 is on a distinguished road
Default Ideal Cut with no Excellent Finish?

Hi, can anyone clarify my understanding of the characteristics of an Ideal Cut diamond.

I have a report from E.G.L which I know isn't rated as high as GIA, but that aside its saying that it is a "Tolkowsky Ideal Cut" however its proportions cut grade is rated "Very Good" with Polish "Very Good" and Symmetry "Very Good".

Shouldn't the finish details of the diamond under this report have some form of an "Excellent" rating?

Can a "Tolkowsky Ideal Cut" diamond have nothing "Excellent" about it?
Moskva777 is offline   Reply With Quote
Old 08-22-2011, 11:24 AM   #2
John's Avatar
Join Date: Dec 2001
Posts: 38
Rep Power: 50 John is on a distinguished road

Cut, polish and symmetry are all very different.

Cut refers to the proportions of the diamond.. which take into consideration depth, table, pavilion, crown, etc. These have to fall within certain ranges to be considered Ideal.

Symmetry is how well all the facets match each other. Like if you were to draw a line through the middle of the diamond, is one side a mirror image of the other? Is it just slightly off, or way off? Very Good is still good. The human eye can not determine the difference between Very Good and Excellent.

Polish is basically how smooth the surface of the diamond is when it was cut. The more it was polished smooth, the better the polish. Again, the human eye can't really see the difference between Very Good and Excellent. You need a microscope to see any surface finish blemishes.

Hope that helps!
John, DiamondInfo.org Administration
Forum Guidelines - PLEASE READ
Diamond Buyer's Guide @ Diamond Info.Org
John is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
AGS0 Vs. GIA Excellent bluesbrothers Diamond Discussions 4 01-04-2009 10:34 PM
What is the most I should pay for 1.33ct, F, VS2, Excellent Cut & Finish stackhousem Diamond Discussions 1 11-11-2008 11:30 PM
Choosing the ideal diamond..... cdndman Diamond Discussions 6 08-16-2008 09:42 PM
Valuation of South African Ideal cut diamond catriona2105 Diamond Discussions 2 06-29-2007 10:01 AM

All times are GMT -8. The time now is 06:28 AM.
Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.