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ť Picture of a real diamond with Thin Girdle width

Picture of a real diamond with Thin Girdle width

P: 7/11/2005 9:46:03 AM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	Is it possible for someone to post a picture of a real diamond with Thin Girdle width? What does it really look like? I know a lot of the Whiteflash ACA diamonds have thin girdles but we never see an actual picture of one to compare to medium or very thin.
Posted: 7/11/2005 9:46:03 AM

There are 29 replies to this message. There are 29 replies on this page.

P: 7/11/2005 10:14:52 AM
Lorelei Ideal Rock Total Posts: 34,284 Last Post: 11/25/2009 Member Since: 4/30/2005	I don't know how to post a pic Pyramid but I can describe my 3/4 carat diamond in my pendant for you. This stone is all top and no bottom and the girdle is extremely thin and sharp if you run your finger along it. If it was a great quality diamond, I would be worried about trusting it in a ring as the girdle is so fragile and sharp. However it is fine for a pendant and I am sure that most quality diamonds with thin girdles are thicker than this one. It sparkles a bit but the cut is off and is an uncertified stone. One good thing though, it does look large so I imagine I have gained on spread? Nothing is more sacred as the bond between horse and rider...no other creature can ever become so emotionally close to a human as a horse. When a horse dies, the memory lives on because an enormous part of his owner's heart, soul, very existence dies also...but that can never be laid to rest, it is not meant to be... - Stephanie M Thorn
Posted: 7/11/2005 10:14:52 AM

P: 7/11/2005 10:36:26 AM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	Thanks Lorelei I know that girdles can be graded thin, very thin and extremely thin but as you said in a pendant it does not matter the same.
Posted: 7/11/2005 10:36:26 AM

P: 7/11/2005 12:54:46 PM
JohnQuixote Ideal Rock Total Posts: 5,212 Last Post: 5/24/2008 Member Since: 9/9/2004	Pyramid - It looks the same. Just a bit thinner. Seriously though, what exactly are you seeking - just a close-up, analytical photo of a thin girdle on a RB? I'd think one of the appraisers might have that. When the new AGS charts came out I created a graphic (wireframe), but don't know if that would be helpful for your purposes. John __________________________ John Pollard Whiteflash Director of Education 2004-2007
Posted: 7/11/2005 12:54:46 PM

P: 7/11/2005 12:56:46 PM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	Thanks John Quixote Yes, I suppose it would look the same. I was just trying to see the difference between very thin, thin, medium, thick and Richard Sherwood posted thick and medium so I wondered about thin and very thin. The only thin I have seen was in Gary Roskin's photo but it was only the thin part of the girdle about a natural as was Richard Sherwoods with a medium so I suppose that is just the same. It is just that when people post their new diamond we never see the girdle but then it is minute compared to the diamond I know.
Posted: 7/11/2005 12:56:46 PM

P: 7/11/2005 2:26:37 PM
JohnQuixote Ideal Rock Total Posts: 5,212 Last Post: 5/24/2008 Member Since: 9/9/2004	Pyramid, Understand your curiosity. I realize these are not actual photos, but I thought the chart might be of interest to you. I created this using virtual models to show relative thickness differences. The percentage for each example medium and above is generally at the midpoint of the AGS defined range. With the thins I put it nearer the small end of the range. I'll also attach their new thickness chart. John __________________________ John Pollard Whiteflash Director of Education 2004-2007
Posted: 7/11/2005 2:26:37 PM

P: 7/11/2005 2:27:30 PM
JohnQuixote Ideal Rock Total Posts: 5,212 Last Post: 5/24/2008 Member Since: 9/9/2004	Thickness Chart (Copyright AGS 2005, used with permission) John __________________________ John Pollard Whiteflash Director of Education 2004-2007
Posted: 7/11/2005 2:27:30 PM

P: 7/11/2005 3:12:47 PM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	Thanks John Quixote. That is exactly what I wanted to see.
Posted: 7/11/2005 3:12:47 PM

P: 7/11/2005 3:24:06 PM
Kaleigh Ideal Rock Total Posts: 25,920 Last Post: 11/24/2009 Member Since: 11/18/2004	Thanks John, That was very helpful!!!! ____________________________ Piece of cake and a candle. ng gift
Posted: 7/11/2005 3:24:06 PM

P: 7/11/2005 4:36:02 PM
JohnQuixote Ideal Rock Total Posts: 5,212 Last Post: 5/24/2008 Member Since: 9/9/2004	Yous all welcome. John __________________________ John Pollard Whiteflash Director of Education 2004-2007
Posted: 7/11/2005 4:36:02 PM

P: 7/11/2005 4:38:51 PM
Mara Ideal Rock Total Posts: 27,936 Last Post: 11/25/2009 Member Since: 10/30/2002	I actually prefer a thin-med girdle...as opposed to medium average or higher. See if I still say that if I ever pull a Laney, with my clumsy self you never know! KNOCK ON WOOD! ________________________________ "Insanity: doing the same thing over and over again and expecting different results." -Albert Einstein
Posted: 7/11/2005 4:38:51 PM

P: 7/11/2005 4:58:32 PM
Lynn B Ideal Rock Total Posts: 5,151 Last Post: 11/24/2009 Member Since: 5/9/2004	Date: 7/11/2005 4:38:51 PM Author: Mara KNOCK ON WOOD! ... but not TOO HARD!!! Lynn And THAT'S my story and I'm sticking to it!
Posted: 7/11/2005 4:58:32 PM

P: 7/11/2005 5:05:20 PM
belle Ideal Rock Total Posts: 10,287 Last Post: 4/3/2008 Member Since: 11/19/2004	hey, those are cool! (.¸(`.¸¸.´)¸.) ¨`.¸ belle¸. ´¨ (¸.(¸.´ `.¸).¸)
Posted: 7/11/2005 5:05:20 PM

P: 7/12/2005 4:50:41 AM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	On the thin girdle are there little spaces at the midpoint of the valleys or is it just that the ink is darker?
Posted: 7/12/2005 4:50:41 AM

P: 7/12/2005 7:56:40 AM
strmrdr Ideal Rock Total Posts: 23,296 Last Post: 10/9/2009 Member Since: 11/1/2003	its a princess but check this picture: http://www.pricescope.com/idealbb/view.asp?topicID=14798&forumID=3&catID=&search=1&searchstring= ........... Karl has joined the diamond trade and is now posting as Karl_K
Posted: 7/12/2005 7:56:40 AM

P: 7/12/2005 12:41:24 PM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	Thanks Strmdr. That was an interesting thread. Does anyone else have a photo of a round diamond with thin girdle?
Posted: 7/12/2005 12:41:24 PM

P: 7/12/2005 6:09:50 PM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	The lines on the Very Thin girdle is it just that they cannot be seen under 10x magnification or is there no girdle there? I thought Very Thin still had some girdle?
Posted: 7/12/2005 6:09:50 PM

P: 7/12/2005 11:05:45 PM
Eightball Rough Rock Total Posts: 11 Last Post: 11/19/2005 Member Since: 6/21/2005	Click Here for Close-up of chipped girdle (from GIA website): http://www.gia.edu/images/image_library/492.jpg Article Link http://www.gia.edu/research/1383/2313/article_detail.cfm
Posted: 7/12/2005 11:05:45 PM

P: 7/13/2005 4:23:51 AM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	Thank you for this information Eightball. I had seen the photo around Pricescope before but did not know where it was from. The GIA article explains it well.
Posted: 7/13/2005 4:23:51 AM

P: 7/13/2005 6:28:37 AM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	http://www.diamonddoctor.com/diamond-proportions.html Found these on an internet search. Diamonds do not look very pretty though.
Posted: 7/13/2005 6:28:37 AM

P: 7/13/2005 6:30:11 AM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	http://lib1.store.vip.sc5.yahoo.com/lib/horizonwholesale/diagramgirdle.gif Also found this on an image search on the internet. What is with this, they are saying a Very Thin Girdle comes under best?
Posted: 7/13/2005 6:30:11 AM

P: 7/13/2005 11:14:32 AM
denverappraiser Ideal Rock Total Posts: 4,618 Last Post: 11/25/2009 Member Since: 7/21/2004	Here's a 2.13 Euro with a very thin girdle. There's never a crowd when you go that extra mile.
Posted: 7/13/2005 11:14:32 AM

P: 7/13/2005 11:30:51 AM
laney Ideal Rock Total Posts: 750 Last Post: 7/27/2006 Member Since: 12/18/2003	Date: 7/11/2005 4:38:51 PM Author: Mara I actually prefer a thin-med girdle...as opposed to medium average or higher. See if I still say that if I ever pull a Laney, with my clumsy self you never know! KNOCK ON WOOD! Pull a "Laney" LOL!!! Laney
Posted: 7/13/2005 11:30:51 AM

P: 7/13/2005 3:26:03 PM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	Thanks denverappraiser. Is the whole of the girdle rated as Very Thin or just the part to the left of centre?
Posted: 7/13/2005 3:26:03 PM

P: 7/13/2005 3:29:21 PM
denverappraiser Ideal Rock Total Posts: 4,618 Last Post: 11/25/2009 Member Since: 7/21/2004	The Sarin calls this one very thin to medium. The thinnest piece is at the front center. What you see on the left side would probably be called medium. Neil There's never a crowd when you go that extra mile.
Posted: 7/13/2005 3:29:21 PM

P: 7/13/2005 4:29:45 PM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	Yes that is the bit I meant in the centre to the left of the half facets. The Very Thin still looks substantial though, is this at 10X magnification?
Posted: 7/13/2005 4:29:45 PM

P: 7/13/2005 4:40:51 PM
JohnQuixote Ideal Rock Total Posts: 5,212 Last Post: 5/24/2008 Member Since: 9/9/2004	The wording on the AGS girdle thickness chart above is a bit confusing. It shows 16 points ('Where to measure') on the bottom left photo but the wording at upper right indicates that the smallest or largest measurements 'at any place on the girdle' are used to make determinations - this is what had been done in the past. It was confirmed to me today that AGS is scrutinizing the entire girdle for thinnest and thickest measures, not just the 16 points illustrated in the lower left diagram. Old System: Min and max both measured at the valleys (middle of the scallops). New System: The minimum is still being taken from the valleys. The maximum is now taken from the mountains (the thickest part - most often where the bezel and the main meet or halfway between - where the red dots are on the diagram). On the chart maximum thicknesses have been changed to accomodate the bigger area, since averages will now read as bigger. (edited to clarify old versus new) John __________________________ John Pollard Whiteflash Director of Education 2004-2007
Posted: 7/13/2005 4:40:51 PM

P: 7/13/2005 4:45:48 PM
JohnQuixote Ideal Rock Total Posts: 5,212 Last Post: 5/24/2008 Member Since: 9/9/2004	Date: 7/12/2005 4:50:41 AM Author: Pyramid On the thin girdle are there little spaces at the midpoint of the valleys or is it just that the ink is darker? Referring to the computer models, the 'ink' is just darker. No spaces. Date: 7/12/2005 6:09:50 PM Author: Pyramid The lines on the Very Thin girdle is it just that they cannot be seen under 10x magnification or is there no girdle there? I thought Very Thin still had some girdle? Very thin does have some girdle. Again, those are virtual models at 72dpi. I have zoomed that Very Thin example for you here. Neil's actual photo is a good 'live' reference. John __________________________ John Pollard Whiteflash Director of Education 2004-2007
Posted: 7/13/2005 4:45:48 PM

P: 7/13/2005 4:56:19 PM
JohnQuixote Ideal Rock Total Posts: 5,212 Last Post: 5/24/2008 Member Since: 9/9/2004	I think it's important to remember that girdle thickness definitions change with the size of the diamond since they are based on percentages. Thin on a 0.25 ct will range between 0.02 - 0.11 mm. The same Thin on a 3.00 ct ranges from 0.05 all the way up to 0.26 mm. The larger the diamond the larger the girdle definitions. This makes complete sense vis a vis durability or (alternately) hidden weight. Examples: Very Thin on the chart above ranges from just above knife-edge to 0.50% On a 0.25 ct diamond that means up to 0.02 mm On a 1.00 ct diamond (6.5 mm dia) up to 0.03 mm On a 3.00 ct diamond (9.4 mm dia) up to 0.05 mm Thin ranges from 0.50% all the way to 2.99% On the 0.25 ct that is up to 0.11 mm On the 1.00 ct that is up to 0.18 mm On the 3.00 ct that is up to 0.26 mm So thin on a 0.25 ct could be around the thickness of a human hair, while thin on 3.00 cts could be the thickness of 3-4 human hairs (depending on who's hair...if it's mine you could pile on plenty and not have much!) John __________________________ John Pollard Whiteflash Director of Education 2004-2007
Posted: 7/13/2005 4:56:19 PM

P: 7/13/2005 6:52:04 PM
Pyramid Ideal Rock Total Posts: 2,914 Last Post: 11/11/2009 Member Since: 11/10/2002	Thank you John Quixote. That virtual model explains it now that it is expanded. It also explains the other chart I posted a link to except that Very Thin is being linked under 'Best'. I found it on an internet search so it may not be very accurate. I notice the diamond posted by denverappraiser is over 2 carats - I like the hairs breadth analogy
Posted: 7/13/2005 6:52:04 PM

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