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HELP on 1.5 diamond GIA SI1

newtodiam

Rough_Rock
Joined
Mar 7, 2014
Messages
45
looking at a 1.50 round (eye clean):
GIA cert.
SI1
H Color
Good Cut
6.99-7.04x4.66mm

Is this a stone i should buy for $10,000??
 
Would need to see numbers on the cert but I would want a cut grade better than good.
 
Plus you should look at ideal cut or excellent cut stones. They will give out the most sparkle for your buck...

Look at states

Table 54-58
Dept 60-623
crown angle 34-35
153%
pavilion angle 40.6-41.0

excellent - cut excellent polish excellent symmetry.
 
Most 1.5s are around 7.4mm range, at the 7mm diameter the diamond looks like a 1.25-1.3. Probably not a well cut diamond
 
No. Cut quality is terrible.

Excellent: Some are better than others. Run though HCA and get an idealscope image.
Very good: Not good enough :!:
Good: Poor
Fair: Foul
Poor: Execrable

The entire purpose of faceting a diamond is to reflect light.
How well or how poorly a diamond does this determines how beautiful it is.
How well a diamond performs is determined by the angles and cutting. This is why we say cut is king.
No other factor: not color, not clarity has as much of an impact on the appearance of a diamond as its cut. An ideal H will out white a poorly cut F. And GIA Ex is not enough.
So how to we ensure that we have the right angles and cutting to get the light performance we want?
https://www.pricescope.com/wiki/diamonds/diamond-cut
Well one method is to start with a GIA Ex, and then apply the HCA to it. YOU DO NOT USE HCA for AGS0 stones.
https://www.pricescope.com/wiki/diamonds/holloway-cut-advisor
The HCA is a rejection tool. Not a selection tool. It uses 4 data points to make a rudimentary call on how the diamond may perform.
If the diamond passes then you know that you are in the right zone in terms of angles for light performance. Under 2 is a pass. Under 2.5-2.1 is a maybe. Over 2.5 is a no. No score under 2 is better than any other.
Is that enough? Not really.
So what you need is a way to check actual light performance of your actual stone.
That's what an idealscope image does. https://www.pricescope.com/wiki/diamonds/firescope-idealscope
It shows you how and wear your diamond is reflecting light, how well it is going at it, and where you are losing light return. That is why you won't see us recommending Blue Nile, as they do not provide idealscope images for their diamonds. James Allen and WF do.

The Idealscope is the 'selection tool'. Not the HCA.
So yes, with a GIA stone you need the idealscope images. Or you can buy an idealscope yourself and take it in to the jeweler you are working with to check the stones yourself. Or if you have a good return policy (full refund minimum 7 days) then you can buy the idealscope, buy the stone, and do it at home.


Now if you want to skip all that... stick to AGS0 stones and then all you have to do is pick color and clarity and you know you have a great performing diamond. Because AGS has already done the checking for you. That's why they trade at a premium.
 
what about for $7500?
 
The fact that he didn't offer it at that price in the first place would make me say no. Plus the cut quality seems horrible, so I would definitely not buy it for myself. A cz would probably be shinier.
 
newtodiam|1394311556|3630132 said:
what about for $7500?

Run, Forrest, run!
 
Andelain|1394312943|3630140 said:
newtodiam|1394311556|3630132 said:
what about for $7500?

Run, Forrest, run!

Not at any price. But especially for 7500.

It's a crappy diamond. I don't know what you want us to tell you. We aren't going to change our minds. It's a crappy diamond at any price.

Read what I posted for you before.
 
newtodiam|1394311556|3630132 said:
what about for $7500?
Too cheap!,Definitely no!... :nono: the price tells me that it is a crappy stone.... :knockout:
 
Why would you buy what's probably not a recut-worthy stone to begin with? Why not just buy right the first time?

That's also a sample image you linked to, not an actual stone. Flags are going up here for me as to whether your intentions are real or you're simply looking for attention. Which is it?
 
Why pay for a recut? Who knows how it will turn out. Get an ideal or excellent cut stone from the door.
 
From what ive seen online...if it became an excellent cut with say 6.99-7.04 x4.44 (1.3 ct.) dimensions it would be a 9000+ diamond...and id be buying for 7500 then 600+ for a recut... no?

Depth: 60
Table: 61
Crown: 34
Pavilion: 40.5
Cutlet: None
 
newtodiam|1394509116|3631490 said:
From what ive seen online...if it became an excellent cut with say 6.99-7.04 x4.44 (1.3 ct.) dimensions it would be a 9000+ diamond...and id be buying for 7500 then 600+ for a recut... no?


You just don't understand how this works.

NO INSURANCE will insure your diamond while it is being recut. And it is an SI clarity stone. That means that it has inclusions that could result in either: No recut being possible. Or a total loss on the cutting wheel.

It's not like recutting fabric. It's not like getting alterations done to a dress or a pair of pants.

Recuts are DANGEROUS. And a total recut of an SI stone is not smart.

So think of it this way.

You buy a diamond that is worth only probably 6500. Because your jeweler is not an idiot. He's not doing you a favor and GIVING you a nine thousand dollar diamond for 7000. Your diamond is probably worth LESS than 7000. Because he is making a profit. GET IT?

And then you are going to risk a TOTAL loss of that money, because again, NO ONE will insure that diamond while it is being recut, by getting it recut.

That's just dumb.
 
okay thanks. Ill drop that idea...

what is the largest stone i should shoot for, for $10k and above SI1 and H color?
 
I think it all comes down to preference. If you have seen a handful of other diamonds and this is one you personally like then you should consider it. Compare it to similar rated diamonds on here or on bluenile and use that as a guide to what you should pay.
 
sunvila|1394511914|3631526 said:
I think it all comes down to preference. If you have seen a handful of other diamonds and this is one you personally like then you should consider it..

Terrible advice.

Most people don't know a good diamond from a bad one, especially under jewelers lights.

And it takes time and education to learn what to look for.
 
Here are two very nice H's.

Both are 1.4 carats. Put on hold ask if eyeclean and get an idealscope. James Allen has a 60 day full refund (including shipping) return policy.

http://www.jamesallen.com/loose-diamonds/round-cut/1.42-carat-h-color-si1-clarity-excellent-cut-sku-244401
http://www.jamesallen.com/loose-diamonds/round-cut/1.40-carat-h-color-si1-clarity-excellent-cut-sku-285592

LOOK AT THE DIMENSIONS. BOTH are larger than your poorly cut 1.5.

So they are BIGGER. Even though they weigh less.

Because they are cut properly.

You would have lost MUCH more than 10 points in a recut of that poorly cut stone.
 
So, if most people don't know the difference....the what is the difference if you are paying a fair price for what the diamond is worth?



Gypsy|1394512117|3631529 said:
sunvila|1394511914|3631526 said:
I think it all comes down to preference. If you have seen a handful of other diamonds and this is one you personally like then you should consider it..

Terrible advice.

Most people don't know a good diamond from a bad one, especially under jewelers lights.

And it takes time and education to learn what to look for.
 
sunvila|1394517661|3631570 said:
So, if most people don't know the difference....the what is the difference if you are paying a fair price for what the diamond is worth?



Gypsy|1394512117|3631529 said:
sunvila|1394511914|3631526 said:
I think it all comes down to preference. If you have seen a handful of other diamonds and this is one you personally like then you should consider it..

Terrible advice.

Most people don't know a good diamond from a bad one, especially under jewelers lights.

And it takes time and education to learn what to look for.


Why don't you start your own thread and ask these questions instead of highjacking someone else's. :wavey: It's more polite that way.

But to answer your questions QUICKLY. Poorly cut diamonds may look good under jewelers lights that are designed to make badly cut diamonds look good. You get it at home and after a day of wear you'll see that all you have is a dull rock.

Oh, and please start doing some research on the benfits of well cut diamonds up at the top of the page under knowledge.

Also, if you don't know what a good car or a bad car is. And someone tells you not to buy a Yugo and buy a nice Toyota instead... but you like what the sales person says about the Yugo, like how it looks... and it's cheaper than the Toyota. And apparently you lack the skills or inclination to do the research yourself (cause there is plenty out there). Then someone comes in to a forum, someone with 10 or less posts to their name, and says "Hey, if you like the Yugo, go for it"... wouldn't you say that's bad advice?

Cause that's pretty much what's happening here. :wavey:
 
what would be a reasonable price for a 1.57 H VS2??
 
newtodiam|1394646794|3632595 said:
what would be a reasonable price for a 1.57 H VS2??

What shape?
What cut quality?
Graded by what lab?
 
Round, Very Good, No lab
 
newtodiam|1394646974|3632598 said:
Round, Very Good, No lab
Then how would you know the grade?
 
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