Help with 2.5 Stone

[Jo1972]

My jeweler has two stones I am interested in. QUESTION - IS ONE WORTH MORE THAN THE OTHER?
Here are the specs:

STONE 1
Carat Weight:2.5
Cut: Excellent
Color: H
Clarity: SI-1
Lab Name: GIA Certified
Fluorescence: Medium

STONE 2
Carat Weight:2.5
Cut: Excellent
Color: E
Clarity: SI-2
Lab Name: EGL USA
Fluorescence: None

Thanks in advance!

 

[smilligan]

That's a difficult question to answer without the exact specs of the diamond (namely table, crown angle, pavilion angle, total depth, and diameter) and seeing pictures, videos, and/or IS/ASET. Without knowing any of this, I would say the first one is probably worth more because it's graded by GIA and the second is graded by EGL. It's EGL-USA, so it may only be 1-3 grades below the GIA grades, but it's impossible to say without seeing it. What is the pricing on them? Is there a reason that you are drawn to these two stones?

ETA: Since the GIA stone has medium fluorescence, the retail value of the two may be similar.

 

[diamondseeker2006]

Since the EGL grading is questionable, there is no way to compare. I wouldn't consider the EGL stone because of the unreliable grading, and an SI2 in a 2.5 ct stone is very risky anyway. Stick to GIA Excellent cut only, and do post all the measurements because some GIA excellents are better than others. H SI1 in a GIA Ex cut can be a very nice choice. Have you seen the stone and do you have magnified images? Also, what is the price?

 

[pyramid]

I would bring them both to an appraiser. If the E color is an F color that stone will be worth far more. I have also seen
a GIA VG stone although it was small, and it looked as good as an AGS ideal to a passer by and to me even without the loupe.
GIA VG is a good grade to get. The Fluorescence although many like it here, is seen as not good and gives a discount to stones
but does help in the J and below grades to make a stone whiter.
The SI2 is what would put me off though, but then there have been some great SI2 stones in the past but chances in a 2.5 carat may be slim. Does the SI2 stone look as good to you with the naked eye.

 

[pyramid]

Ideal and GIA Ex is what idealist want like myself even, but my local high street jeweller in a major city, has LOTS . of GIA VG and
no EX but plenty of people are swooning in the windows at them and ads are run on television for them, this is a family owned jeweller and not a chain store. These diamonds are beautiful and cheaper than Ideal grade diamonds if you do not have
diamonds as your hobby. It is good to stick to Ideal and EX though if you are looking at colors of J and lower but a G color VG is a beautiful diamond. The GIA VG I saw was a D color and I would have bought it. EGL grades are normally lower but EGL USA is better than EGL Israel. Chances are the E won't be an F but an appraiser could tell you.

 

[WinkHPD]

My jeweler has two stones I am interested in. QUESTION - IS ONE WORTH MORE THAN THE OTHER?
Here are the specs:

STONE 1
Carat Weight:2.5
Cut: Excellent
Color: H
Clarity: SI-1
Lab Name: GIA Certified
Fluorescence: Medium

STONE 2
Carat Weight:2.5
Cut: Excellent
Color: E
Clarity: SI-2
Lab Name: EGL USA
Fluorescence: None

Thanks in advance!

Unless you know what you are doing or are working with an excellent appraiser, run do not walk, from the EGL papered diamond. Chances are very good that if sent to GIA that SI2 could easily become an I1 with a tremendous hit in value, regardless of the color.

GIA allows a huge range of proportions to receive the Excellent rating, some of them quite beautiful and some of them only so so. So, even with the GIA graded diamond you are going to need to see it to know if your eyes like it.

Wink

 

[pyramid]

Ofcourse you're correct Wink, I was not thinking about the clarity being actually lower as well as the color.

 

[WinkHPD]

Ofcourse you're correct Wink, I was not thinking about the clarity being actually lower as well as the color.

Not an issue with real paper on real diamonds, but with EGL paper it likely is, and the hit between an E and an F is going to be less at the lower clarities than the hit between an SI2 and an I1. Even if the clarities were higher my advice would be the same, for the novice or occasional buyer there is just too much risk with the second and third tier labs.

Wink

P.S. Pyramid, I hope you are having a wonderful holiday week.

 

[heididdl]

The GIA most certainly would be "worth more" I dont like that term. You are not talking apples to apples the EGL USA F is probably the similar color to the G in your GIA stones. the si2 is worrysome and I would make sure it is eye clean. As an owner of two 1.40 EGL stones I would never purchse one again unless I had it recertified by GIA