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HELP! DON''T KNOW WHAT TO DO

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akim1220

Rough_Rock
Joined
Oct 30, 2009
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I have been looking at several rocks and there is one in particular that I like but not sure of. Stats are below:

1.75 carat
Cut: Very Good
Clarity: SI1 - slight inclusions that can be seen at 10x but not by the naked eye
Color: F or G (I forget)
Polish: Good
Symmetry: Very Good

This diamond is GIA certified and the price that I can get it at is about $13K. My biggest concern is the liveliness and brightness. I compared this stone to a 1.75, vs2, f or g, and excellent in cut, polish, and symmetry and they both looked the same. I am not a jeweler and this is my first time trying to buy a diamond so they all look the same to me. I guess my question is, is the diamond that I am looking at a good deal? Will it be bright and lively compared to stones that have a better quality? I only have about a week to decide or else it might not be available anymore.
 
Can you get the report number and post it here?
 
I probably won''t be able to get it until next week. I would call him but I don''t want to create any tension between us.
 
Just call. Why will asking for the report number be creating any tension?
 
Hi, akim,
It is your jeweler''s job to give you enough information so you feel comfortable with your purchase, so if you need to call him to get more information, that should not be a problem for him.

All you need to ask him for is the GIA report number and someone on this forum can look up the certification and get the numbers. You can look it up yourself, too; I just can''t remember the link for the website that allows you to punch in the report numbers.

I know you are excited about this diamond, but please don''t rush to buy anything on the basis of "it might not be there next week." If, for some reason, you lose out on that diamond or you decide, after feedback from this forum, that it''s not such a great stone after all, you will be able to find another beautiful diamond in the size and price range you''re looking for.
 
Hi akim

Really a lot more info is needed on this diamond, at a minimum;

depth%
table%
crown and pavilion angles
diameter in MM
girdle thickness

So if you could either get the report number so we can look it up or ask the jeweller for that info, that would be very helpful.
 
Sorry for my ignorance, I''ll try to get that report # asap and post it. I''m beginning to think that the diamond is not that great.
 
You''ll see by the pricing tool on this site that options like yours broadly run from $11K to $16,5.

Doesn''t seem on the face of it there''s anything extraordinary here.

Over time, we''ve seen many nervous nellys, and folks with similar concerns. My advice...nobody''s doing anybody any favors. You don''t have to over study, but don''t be afraid to ask basic questions, and there''s lots of fish in the ocean.

Regards,
 
Date: 10/30/2009 10:58:33 AM
Author: akim1220
Sorry for my ignorance, I''ll try to get that report # asap and post it. I''m beginning to think that the diamond is not that great.
No need to apologize!!! Also some VG cut GIA graded diamonds can be lovely stones so if you can get that info we will be able to get a better idea.
 
Ok, I now have the information. The GIA report # is 2101392878.

ROUND BRILLIANT

Measurements: 7.61 - 7.66 x 4.85 mm
Carat Weight: 1.75 carat
Color Grade: F
Clarity Grade: SI1
Cut Grade: Very Good
PROPORTIONS:

Depth: 63.5%
Table: 55%
Crown Angle: 35.5°
Crown Height: 16.0%
Pavilion Angle: 41.0°
Pavilion Depth: 43.5%
Star length: 55%
Lower Half: 80%
Girdle: Medium to Slightly Thick, Faceted (3.5%)
Culet: None
FINISH:

Polish: Good
Symmetry: Very Good
Fluorescence: None

I want to know what your opinion is on this stone and if it is a "lively" diamond and will sparkle for years. Thanks
 
Not that good, pavilion angle is too steep for that crown angle, will be leaky under the table.
 
What do you mean as it being leaky under the table? Is the price reasonable for this diamond?
 
instead of light being reflected back into the observer, the light leaks through the pavilion and the stone will look dull.
 
Date: 11/2/2009 9:42:27 AM
Author: akim1220
What do you mean as it being leaky under the table? Is the price reasonable for this diamond?
This diamond is actually what is termed a steep deep here, if you look up the term steep deep in the search tool you will find lots to read about. Both crown and pavilion angles are not a good fit for each other, the angles aren't going to change with one being too steep for the other, it is what it is. This results in light leakage, what happens is instead of the light being reflected back to the viewer's eye as with a well cut diamond, steep deeps act like a sieve, light escapes from the diamond resulting in a stone which won't sparkle as well as it could do. Sometimes you can see dark areas around the table or dark patches.

Akim, this isn't a well cut stone, too deep and also steep deep angled, you can do better as sparkle is important to you.
 
Thanks for the input guys. Is it possible to have a well cut stone with this weight and price? Or should I be looking for a smaller carat to have a better cut? What should I be looking for when looking at diamonds and what can I expect to pay? I know a lot of these questions are probably to general, first time diamond buyer. I thought I had enough knowledge to pick out a decent ring but seems like I am wrong. All the help would be EXTREMELY appreciated.
 
Date: 11/2/2009 10:01:27 AM
Author: akim1220
Thanks for the input guys. Is it possible to have a well cut stone with this weight and price? Or should I be looking for a smaller carat to have a better cut? What should I be looking for when looking at diamonds and what can I expect to pay? I know a lot of these questions are probably to general, first time diamond buyer. I thought I had enough knowledge to pick out a decent ring but seems like I am wrong. All the help would be EXTREMELY appreciated.


You are welcome!

Yes it is possible to get that size and a good cut online, if you lower your colour and clarity requirements also to broaden the option it could be done. Personally I wouldn't want that diamond but that is only my opinion.

Here are some numbers you can use to find a well cut round diamond.

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).

Here is a diamond which could work if eyeclean, its a bit over budget at $13600 thereabouts but I thought I would post it anyway

http://www.whiteflash.com/hearts_arrows/Whiteflash-ACA-cut-diamond-2176305.htm

 
You can probably just look for a lighter stone, considering the fact that the 1.75c stone you are looking at actually has the same face up diameter as a 1.64c ideally cut stone.
 
Thanks again. So I should be looking for an excellent cut to get the liveliest stone. And then from that I should check the dimensions of the diamond to make sure it is well cut. Will the SI1 inclusions have an effect on the brightness?

The jeweler that I am going to is a family acquaintance and my parents knew him for a while. He travels back and forth from NY and Philly to pick up diamonds so he doesn't usually have a wide selection for me to look at. Next time he is going to pick up more diamonds is later this week. What should I tell him so that way he is 100% clear on what I want. I don't want to tell him a nice diamond but more on a technical scale.
 
Use the proportion listed by lorelei above.
 
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