Help please-1.5 Round61% table?

[Viv]

Can some experts give advice on this diamond? I have read that a larger table is not a good pick- but this scores a 1.3 HCA...any advice ?

http://www.bluenile.com/round-diamond-1-carat-ideal-cut-i-color-si1-clarity_LD01606713

http://img.bluenile.com/is-viewers/dhtml/bnZoomTemplate.jsp?image=certs/?src={/2015/GIA2111018511_zoom.jpeg}&serverUrl=http://img.bluenile.com/is/image/certs/?src={/2015/GIA2111018511_zoom.jpeg}

 

[Lorelei]

Date: 1/26/2010 11:44:17 AM
Author:Viv
Can some experts give advice on this diamond? I have read that a larger table is not a good pick- but this scores a 1.3 HCA...any advice ?

http://www.bluenile.com/round-diamond-1-carat-ideal-cut-i-color-si1-clarity_LD01606713

http://img.bluenile.com/is-viewers/dhtml/bnZoomTemplate.jsp?image=certs/?src={/2015/GIA2111018511_zoom.jpeg}&serverUrl=http://img.bluenile.com/is/image/certs/?src={/2015/GIA2111018511_zoom.jpeg}

Lets take a look....

This stone has potential, it falls within 60 60 range ( 60% depth 60% table). Some really like these diamonds and they can look larger for the weight and be very bright and brilliant. This diamond has a slightly shallower crown angle which can further enhance brilliance, however the trade off is the fire or coloured light could be down somewhat. As far as can be told from the info provided it could be worth further consideration.

As discussed earlier, the diamond does have grade making clouds listed for SI clarity, you would need to check these aren't impacting performance by asking your BN rep to find out for you.

 

[Laila619]

That''s too big of a table for me, but it''s a personal preference.

 

[Viv]

How would you compare first posted diamond to this one...... http://www.bluenile.com/round-diamond-1-carat-ideal-cut-h-color-si2-clarity_LD01570819

http://img.bluenile.com/is-viewers/dhtml/bnZoomTemplate.jsp?image=certs/?src={/2127/GIA5111246904_zoom.jpeg}&serverUrl=http://img.bluenile.com/is/image/certs/?src={/2127/GIA5111246904_zoom.jpeg}

 

[Lorelei]

Date: 1/26/2010 12:22:39 PM
Author: Viv
How would you compare first posted diamond to this one...... http://www.bluenile.com/round-diamond-1-carat-ideal-cut-h-color-si2-clarity_LD01570819

http://img.bluenile.com/is-viewers/dhtml/bnZoomTemplate.jsp?image=certs/?src={/2127/GIA5111246904_zoom.jpeg}&serverUrl=http://img.bluenile.com/is/image/certs/?src={/2127/GIA5111246904_zoom.jpeg}

Its up to you - if you prefer the 60 60 type or diamonds with a larger table then thats fine, but personally I would look for a diamond which has more balanced proportions, here is a guide you can use to help you find a well cut round with a smaller table if you prefer. Out of the two I prefer the proportions of the first but I would consider a diamond with a smaller table following the guide below unless you like the larger tabled look.

depth - 60 - 62% - although my personal preference is to allow up to 62.4%
table - 54- 57%
crown angle - 34- 35 degrees
pavilion angle - 40.6- 41 degrees
girdle - avoid extremes, look for thin to slightly thick, thin to medium etc
polish and symmetry - very good and above

note - with crown and pavilion angles at the shallower ends ( CA 34- PA 40.6) and steeper ( CA 35- PA 41) check to make sure these angles complement in that particular diamond - eyeballs, Idealscope, trusted vendor input - check as appropriate!

As the above implies, configurations depend on each other. A little give here can still work with a little take there.

From expert John Pollard.

With that said, here's a "Cliff's Notes" for staying near Tolkowsky/ideal angles with GIA reports (their numbers are rounded): A crown angle of 34.0, 34.5 or 35.0 is usually safe with a 40.8 pavilion angle. If pavilion angle = 40.6 lean toward a 34.5-35.0 crown. If pavilion angle = 41 lean toward a 34.0-34.5 crown.

GIA "EX" in cut is great at its heart, but it ranges a bit wider than some people prefer, particularly in deep combinations (pavilion > 41 with crown > 35).

 

[Rockdiamond]

Viv- I have a different take on this.
I'd suggest making a point of looking at actual diamonds. If you can find some stones with slightly larger tables ( 60%) and shallower depths ( 60%) you may like them a lot better once you see what it is we're actually taking about..

I really do not feel it's not accurate to say a stone of 60/60 is less balanced by virtue of that fact. Many people will prefer the larger table if they actually look at it.

Personally I feel the guide given is driven by personal taste.
For example, I would consider round stones of 62% depth to be too deep- but that's my taste.
If your taste matches the person's who devised the guide, it works perfectly- but not everyone's taste is the same.

 

[Lorelei]

Date: 1/26/2010 12:41:44 PM
Author: Rockdiamond
Viv- I have a different take on this.
I'd suggest making a point of looking at actual diamonds. If you can find some stones with slightly larger tables ( 60%) and shallower depths ( 60%) you may like them a lot better once you see what it is we're actually taking about..

I really do not feel it's not accurate to say a stone of 60/60 is less balanced by virtue of that fact. Many people will prefer the larger table if they actually look at it.

Personally I feel the guide given is driven by personal taste.
For example, I would consider round stones of 62% depth to be too deep- but that's my taste.
If your taste matches the person's who devised the guide, it works perfectly- but not everyone's taste is the same.

David, the guide given has been helpful to quite a few people so they can use it to find a well proportioned diamond, it isn't to my personal taste necessarily but it is a good starting point that helps those new buyers confused by proportions and angles etc make some sense of things along with various other methods available. Using the guide has to be better than floundering and giving up, then buying the first stone that looks halfway decent because of not knowing what to look for. Also as I mentioned above, the numbers given are a guide and note the advice that it is to be used as such especially if the buyer particularly likes the larger tabled look.

 

[Rockdiamond]

Viv- again- the tools you're referring to are based on taste- personally I do not use them.

Lorelei- I'm not suggesting people go off willy nilly.
But the guides eliminate many stones that AGS and GIA grade to be be the best cut diamonds ( GIA EX cut grade, or AGS 0)
Therefore I honestly feel that eliminating some of the proportions those guides eliminate will also eliminate some stones that are extremely well cut, and preferred by some buyers.


Viv- personally I would first use the GIA or AGS cut grade, and look at actual stones before using guides suggested.
If you like the smaller table look, the guides are excellent.

 

[Rockdiamond]

PS- it''s a simple matter to change the guide....
Include the larger table sizes and there''s far less to find fault with

 

[Viv]

Date: 1/26/2010 1:23:20 PM
Author: Rockdiamond
PS- it''s a simple matter to change the guide....

Include the larger table sizes and there''s far less to find fault with

Ok Rock- what are your thoughts on these three diamonds? I have to decide today..... Please help!!

#1. http://img.bluenile.com/is-viewers/dhtml/bnZoomTemplate.jsp?image=certs/?src={/2015/GIA2111018511_zoom.jpeg}&serverUrl=http://img.bluenile.com/is/image/certs/?src={/2015/GIA2111018511_zoom.jpeg}

#2. http://img.bluenile.com/is-viewers/dhtml/bnZoomTemplate.jsp?image=certs/?src={/154/GIA2106593808_zoom.jpeg}&serverUrl=http://img.bluenile.com/is/image/certs/?src={/154/GIA2106593808_zoom.jpeg}

#3. http://img.bluenile.com/is-viewers/dhtml/bnZoomTemplate.jsp?image=certs/?src={/104/GIA2115542007_zoom.jpeg}&serverUrl=http://img.bluenile.com/is/image/certs/?src={/104/GIA2115542007_zoom.jpeg}

 

[Viv]

Date: 1/26/2010 1:21:10 PM
Author: Rockdiamond
Viv- again- the tools you''re referring to are based on taste- personally I do not use them.


Lorelei- I''m not suggesting people go off willy nilly.

But the guides eliminate many stones that AGS and GIA grade to be be the best cut diamonds ( GIA EX cut grade, or AGS 0)

Therefore I honestly feel that eliminating some of the proportions those guides eliminate will also eliminate some stones that are extremely well cut, and preferred by some buyers.



Viv- personally I would first use the GIA or AGS cut grade, and look at actual stones before using guides suggested.

If you like the smaller table look, the guides are excellent.

I have looked at a few in person, and I honestly don''t know that I can tell the difference. Would a large table show more brilliance and also make an I or J color look more white?

 

[Viv]

Date: 1/26/2010 1:49:25 PM
Author: Rockdiamond
Hi Viv,

Although the place you''re looking is the largest internet seller, I could personally never understand buying a diamond from a seller that does not have possession of it, therefore has no photos whatsoever.

I''d recommend looking at one of the vendors specializing in Round diamonds here on PS.

There are vendors here that have photos of the actual diamonds.


Buying by formulas in only effective if one knows which combination they like. Evdn then I''m not a fan of it.

I agree- the differences are subtle.

All this again points toward working with a vendor that can show you photos- and also give you first hand opinions of stones they are offering.

So....none look good to you?

 

[Rockdiamond]

Viv- my point is that they look like a bunch of numbers.
I would never buy a stone based only on it''s measurements.
My recommendation is to choose a vendor who has stones in hand, can offer personal observations on those stones, and send photos to help you decide.

 

[Lorelei]

Date: 1/26/2010 1:21:10 PM
Author: Rockdiamond
Viv- again- the tools you're referring to are based on taste- personally I do not use them.

Lorelei- I'm not suggesting people go off willy nilly.
But the guides eliminate many stones that AGS and GIA grade to be be the best cut diamonds ( GIA EX cut grade, or AGS 0)
Therefore I honestly feel that eliminating some of the proportions those guides eliminate will also eliminate some stones that are extremely well cut, and preferred by some buyers.


Viv- personally I would first use the GIA or AGS cut grade, and look at actual stones before using guides suggested.
If you like the smaller table look, the guides are excellent.

Actually they don't if used in the right way as a guide along with other methods, also personal preference is accounted for as I am sure to mention that important factor plays a huge role too.

Also this might be a difficult situation for David Viv as he is a vendor and according to policy might not be able to critique other vendor's diamonds.

 

[stone-cold11]

David is also prevented by the rules of the forum from commenting on other vendors stones as he is also a vendor.

 

[Rockdiamond]

Thanks guys-
Viv- it''s true, I can''t comment on specific stones of vendors.
But the general method for buying is ok for me to discuss.
I recommend insisting on getting actual photos- and I have pointed out that there are other vendors here on PS carrying wide selections of round diamonds on hand that can provide photos and first hand impressions.

I would also like to point out that I know that Lorelei is giving advice in the best way possible, based on the usual advice given here- I know it''s given with nothing but the best intentions.
Still, if you do pick an actual vendor, they should be able to discuss these aspects with you in depth, giving you a better understanding

 

[Lorelei]

Date: 1/26/2010 2:42:20 PM
Author: Rockdiamond
Thanks guys-
Viv- it''s true, I can''t comment on specific stones of vendors.
But the general method for buying is ok for me to discuss.
I recommend insisting on getting actual photos- and I have pointed out that there are other vendors here on PS carrying wide selections of round diamonds on hand that can provide photos and first hand impressions.

I would also like to point out that I know that Lorelei is giving advice in the best way possible, based on the usual advice given here- I know it''s given with nothing but the best intentions.
Still, if you do pick an actual vendor, they should be able to discuss these aspects with you in depth, giving you a better understanding

You are welcome David and thanks for the kind words.

 

[Viv]

Date: 1/26/2010 2:42:20 PM
Author: Rockdiamond
Thanks guys-

Viv- it''s true, I can''t comment on specific stones of vendors.

But the general method for buying is ok for me to discuss.

I recommend insisting on getting actual photos- and I have pointed out that there are other vendors here on PS carrying wide selections of round diamonds on hand that can provide photos and first hand impressions.


I would also like to point out that I know that Lorelei is giving advice in the best way possible, based on the usual advice given here- I know it''s given with nothing but the best intentions.

Still, if you do pick an actual vendor, they should be able to discuss these aspects with you in depth, giving you a better understanding

Thanks for your help- I understand you are not able to comment.

 

[Lorelei]

Date: 1/26/2010 1:23:20 PM
Author: Rockdiamond
PS- it's a simple matter to change the guide....
Include the larger table sizes and there's far less to find fault with

I must have missed this earlier, David if you read the post I do mention if a larger table size is preferred then thats fine, also the proportions given are a guide and are to be used as such, not as an absolute rule and I and others who use it are careful to make this clear.

See below.

Date: 1/26/2010 12:27:24 PM
Author: Lorelei

Date: 1/26/2010 12:22:39 PM

Its up to you - if you prefer the 60 60 type or diamonds with a larger table then thats fine, but personally I would look for a diamond which has more balanced proportions, here is a guide you can use to help you find a well cut round with a smaller table if you prefer. Out of the two I prefer the proportions of the first but I would consider a diamond with a smaller table following the guide below unless you like the larger tabled look.