How much bigger will a diamond Appear if cut is excel?

[whitediamonds]

Say i buy a 1.40 diamond, just what size will it appear to be if the cut is excellent and it sparkles a lot?

( i want my diamond to look bigger than it is)
Help!

 

[Hest88]

It will look the way a properly-cut 1.4 should look.

 

[Magnum]

My fiancee's e-ring (link) has a 1.31 carat center stone. It's depth is 60.1 and it's table is 58% and it's pavilion/crown angles are 41.0/34.1 degrees. We went to the mall before we got it to look at some stones and settings to get an idea of what she liked, and we looked at a 1.5 carat loose stone to see how big it looked. It turned out to be a very deeply cut stone, and was actually the exact same diameter as my fiancee's center stone. So the simple answer to your question is a 1.4 carat excellent cut stone will look sginificantly bigger than a typical deeply cut maul stone of the same carat weight, but will look similar to another excellently cut stone. the more important measurement to determine how big a diamond will look are the diameter measurements (which is affected by the cut), and not the carat weights. As far as the additional light return of an ideally cut stone, it should also make the stone look bigger than a poorly cut stone with the same diameter, but that's tough to quantify.

 

[Garry H (Cut Nut)]

Two 5mm stones.
One wieghs .50ct the smaller looking one weighs .65ct
Your eye sees pretty much what the camera shows.

 

[hoorray]

This is a great example of the visual difference Garry. It's talked about a lot, but the visual difference is really obvious.

 

[whitediamonds]

wow that is amazing! Thank u for those pix of the 2 diamonds side by side, you can see that the white diamond appears close in size to the other one!

Any other examples?

 

[Garry H (Cut Nut)]

They are indeed identical diameters.

We want every retail jeweller in the world to show every customer this demonstration before they buy a diamond.

Scroll down the page until you come to this:
CZ Sales Display Case -US $30* plus S&H*
Use this simple display set to show customers the difference between "excellent" and "bad" cuts. We have sourced sets of excellent Hearts and Arrows quality CZs and set them in a black display case with bad cut CZs.
This is a powerful aid for your sales staff and will help to clearly illustrate the difference between good and bad make.

 

[valeria101]

Gee! The stone to the right looks just great for keeping those prongs apart 5mm exactly... with nothing showing in-between. Diamonds are the most transparent thing after all! All that girdle area will disappear from sight, if only you were using white velvet instead of black

It would be a bit much to say that a diamond with lots of light loss near the girdle appears exactly that much smaller, but looking at the other example where the two contenders appear on light-colored background, it definitely looks like that.

Both pics below are Garry's, showing (I hope) what I am talking about.

 

[Garry H (Cut Nut)]

Thanks AnA

The stones in the black box are 5mm CZ's in diffused light. And yes the black box exaggerates the size difference, but remember when diamonds are set there is very little light getting in the back!

And the other stones on the white tray are real diamonds in spot light.

We are working on a set of 6.25mm CZ's and a rough stone (fake) in the center. These are being precision cut so that we can have a counter card to explain what you see in the ideal-scope when you look at these stones. This is a great way to retail diamonds.

 

[whitediamonds]

Wow!

Garry! That's a great example! Thank you!
Do you have any more photos of diamonds that appear larger next to each other because of the COLOR?

For instance, would a D color diamond appear larger than a G color diamond?
(of the same cut quality?)

 

[valeria101]

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On 5/31/2004 11:28:41 AM whitediamonds wrote:


would a D color diamond appear larger than a G color diamond?
(of the same cut quality?)

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This is getting strage... I don't think all Cs have a phisical effect on SIZE. Color? Nope

Clarity? Neither

It is said that colored stones look larger than diamonds for the same diameter (so it is not unusual to see slightly smaller colored ones matched with diamonds in carefully made jewelry). So... maybe dark brown diamonds would look larger than colorless ones by the same logic? Surely this is not what you wanted to hera I suppose.


Now,for a given budget, of course they do

That's the whole point of grading "rarity" and "color" or "clarity" on the same scales, I would think.

You might want to take into account that the top colorless grades are muc closer together than the following ones (so D is much close to E than I to J). So if the appearence of a color grade is of concern, D color would have more impact on price than look.

Hope this helps...

 

[whitediamonds]

Yes, but does a "whiter" diamond APPEAR larger than one of g color, for example, if all things were equal?

 

[Garry H (Cut Nut)]

Ana is right that color will have no effect between D and G.

(G is not a color, it is a letter in the alaphabet. G is not yellow it is a diamond that is colorless with the tiniest hint of color)

But if you move to a real color, like brown then you will notice a diafference the other way.

It is like the black and white dot - the white dot always looks larger. The darkest sapphires require diamonds 10% smaller in diameter to appear the same diameter. Medium champagne diamonds should be 5% wider than white diamonds.

 

[Mara]

This D I3 would definitely be a 'white' diamond!




http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=10216&item=4901482607&rd=1




The correct term for a diamond that is D-F would be COLORLESS, instead of white. This diamond above is somewhat of an oxymoron. So if someone wants a 'white' diamond...as the example shows, eBay is a great place to look. However, if colorless is what you are after...a D-F color graded diamond with a great cut and clarity that will not show inclusions to the naked eye is an excellent choice.




And no a D diamond would not look bigger than a G diamond if all else were equal. A visit to a brick and mortar store may help drive this point home.

 

[valeria101]

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On 5/31/2004 8:58:30 PM Mara wrote:




So if someone wants a 'white' diamond...as the example shows, eBay is a great place to look.

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Actually, at least two guys often list "fancy white" diamonds on Ebay... and I have yet to discover another store making a case for such pieces. Garry mentions them, but I haven't been to Australia yet

There definitely is "something" entitled to the "white diamond" name, and it ain't any I3 piece

Here's GIA description of what these are (LINK). Cool ?