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SI2 Eye Clear Diamond. A real Option?

M

Moshimoshi

Rough_Rock
Joined
Aug 17, 2020
Messages
11
Hello,
I am targeting a 1.6-1.8 round excellent cut diamond, minimum SI1 and H Color.

Jewlers showed me a round eye clean 2.01 SI2, excellent, H color (details below) and say they inclusions will be hidden by prong for $16,500. This seems too good to be true. I mainly want a beautiful diamond and do not want low quality. I know there are inclusions that are not detrimental, but the SI2 clarity makes me nervous. Thoughts? Appreciate any guidance. Thanks!!
ROUND BRILLIANT
Measurements8.01 - 8.04 x 5.04 mm
Carat Weight2.01 carat
Color GradeH
Clarity GradeSI2
Cut GradeExcellent
PROPORTIONS
Depth62.8 %
Table 56 %
Crown Angle35.0°
Crown Height15.0%
Pavilion Angle41.0°
Pavilion Depth43.5%
Star Length50%
Lower Half85%
GirdleSlightly Thick, Faceted, 4.0%
CuletNone
FINISH
Polish Excellent
Symmetry Excellent
FLUORESCENCE
Fluorescence None
CLARITY CHARACTERISTICS
Clarity CharacteristicsFeather, Crystal, Cloud, Cavity, Needle, Indented Natural, Natural
 
Is this diamond GIA graded? Not getting into the eye cleanliness, the specs for this diamond do not lie within the PS recommended range. Even GIA‘s Ex cut range is considered too broad by PS standards if you are looking for a top performing modern round brilliant. This one too deep overall and has a deep crown paired with a deep pavilion, which is not complimentary. Run the specs through the HCA calculator under the Tools button above. Scores of 2 or less (sometimes up to 2.5), are promising. The inclusion plot on the lab report, photos and videos will be needed to help in determining if it’s eye clean. GL
 
Kaycee2018 said:
Is this diamond GIA graded? Not getting into the eye cleanliness, the specs for this diamond do not lie within the PS recommended range. Even GIA‘s Ex cut range is considered too broad by PS standards if you are looking for a top performing modern round brilliant. This one too deep overall and has a deep crown paired with a deep pavilion, which is not complimentary. Run the specs through the HCA calculator under the Tools button above. Scores of 2 or less (sometimes up to 2.5), are promising. The inclusion plot on the lab report, photos and videos will be needed to help in determining if it’s eye clean. GL
Click to expand...

Thanks so much for your reply. It is GIA graded. I am including the link below. Please let me know if this provides any additional insight.

https://www.gia.edu/report-check?reportno=7318217485&s=1597680719112
 
GIA.png

Looks like a lot of inclusions for a SI2. It's tough to judge how clean the diamond is by just looking at the GIA report though. I was shown a diamond locally with a super clean GIA report but it looked cloudy in real life. Cut was also pretty bad when I used the HCA calculator on this site.

I am a diamond noob but learnt a lot by posting on here. There are a bunch of amazing guys here on PS.

Use the HCA calculator and post a screenshot of the score. I am out of free reports for the month haha.
 
You guys are the best. I really value your opinion. Here is a screen shot of the HCA result. Does this help steer one way or the other? IMG_4537.jpg
 
I think some of the inclusions are prong-able, but don’t like that there are so many on the table. This one seriously requires pics, videos and an in person inspection.
2.3 isn’t a terrible HCA score, but usually 2 is the cut off point, and anything above requires additional analysis.
 
anangel said:
I think some of the inclusions are prong-able, but don’t like that there are so many on the table. This one seriously requires pics, videos and an in person inspection.
2.3 isn’t a terrible HCA score, but usually 2 is the cut off point, and anything above requires additional analysis.
Click to expand...

agreed. I would want to see pictures, videos, etc. I am nervous about all of the inclusions and the 2.3HCA.
 
Proportions don't work well together. Way too deep for PS standards and the knot inclusion usually means pass. Overall not a good diamond in my opinion I would look at other options.
 
Not a well cut stone. The cutter forced this stone into a 2.01 ct.
 
Thanks all for the helpful insight. I really appreciate all of the guidance. I decided not to move forward with the 2.01 stone.

Here is the next one up that the jeweler provided. It is beautiful upon examination and had great hearts/arrows; however, when I do the HCA it calculates at 4.7. My question is how much credibility do we give the HCA report? Do I want to not consider any diamonds outside of it's scope?

Thanks again, I'm learning tons from this forum.
Sam


Measurements7.56 - 7.60 x 4.79 mm
Carat Weight1.70 carat
Color GradeH
Clarity GradeSI1
Cut GradeExcellent
PROPORTIONS
Depth63.2 %
Table56 %
Crown Angle36.5°
Crown Height16.0%
Pavilion Angle41.0°
Pavilion Depth43.5%
Star Length50%
Lower Half80%
GirdleMedium to Slightly Thick, Faceted, 3.5%
CuletNone

FINISH
PolishExcellent
SymmetryExcellent
FLUORESCENCE
FluorescenceNone
CLARITY CHARACTERISTICS
Clarity CharacteristicsCloud, Feather, Crystal
Key To Symbols
Cloud.jpg
Cloud
Feather.jpg
Feather
Crystal.jpg
Crystal
COMMENTS
Additional clouds, pinpoints and surface graining are not shown.
INSCRIPTION(S)
GIA 7336326843
 
IMG_4540.jpg
 
Absolutely do not consider this stone. It is too deep, and both the crown and pavillion angles are too steep. I wouldn't consider any stone that scores higher than a 2 (or maybe 2.5 if you've seen it IRL).
 
I feel like I’m always saying this but with that budget you could have a superideal diamond if you wanted, this WF one below measures pretty much the same size as the first one you suggested even though it’s a smaller carat weight. That’s because it’s beautifully cut.

Diamond | 1.846 ct H SI1 A CUT ABOVE® Hearts and Arrows Super Ideal Round Cut Loose Diamond AGS Certified | 4135234

This Whiteflash A CUT ABOVE® super ideal cut hearts and arrows 1.846 carat H color SI1 clarity loose diamond is graded by the American Gem Society (AGS) Laboratories. | 4135234
www.whiteflash.com

 
Snowdrop13 said:
I feel like I’m always saying this but with that budget you could have a superideal diamond if you wanted, this WF one below measures pretty much the same size as the first one you suggested even though it’s a smaller carat weight. That’s because it’s beautifully cut.

Diamond | 1.846 ct H SI1 A CUT ABOVE® Hearts and Arrows Super Ideal Round Cut Loose Diamond AGS Certified | 4135234

This Whiteflash A CUT ABOVE® super ideal cut hearts and arrows 1.846 carat H color SI1 clarity loose diamond is graded by the American Gem Society (AGS) Laboratories. | 4135234
www.whiteflash.com

Click to expand...

This. The carat weight doesn't matter, because what we see with our eyes is the "Face up" size. Stones can be cut way too deep so a lot of their weight is "hidden" underneath the part that we see with our eyes. Look at the L x W measurements on the stone you linked. It is too small for it's carat weight. The stones linked above are cut ideally. The 1.84ct from WF has a "face up" size of 7.93 x 7.96, whereas the 1.7 ct you linked has a "Face" up" size of only 7.56x7.6. You are wasting your money on a subpar stone with your jeweler when you could be getting an ideal cut stone from a trustworthy vendor if you buy online.
 
Thanks for the additional guidance. Do you think it's safe to purchase a stone online that you are not able to see in real life? Do you think it's worth the risk?
 
Moshimoshi said:
Thanks for the additional guidance. Do you think it's safe to purchase a stone online that you are not able to see in real life? Do you think it's worth the risk?
Click to expand...

The vendors we are recommending (WF, HPD), are highly trusted and extremely reputable. It is 100% safe.
 
Moshimoshi said:
Thanks for the additional guidance. Do you think it's safe to purchase a stone online that you are not able to see in real life? Do you think it's worth the risk?
Click to expand...

In addition to the “super ideal” vendors recommended by @lovedogs and @Snowdrop13 above, there are plenty of reputable online diamond retailers with good return policies that sell beautiful GIA ExExEx stones with PS recommended specs. Start by running the specs through the HCA tool and only consider those with scores of 2 or less, maybe up to 2.5. Then post the reports here for opinions. GL
 
You are safest buying a superideal cut from Whiteflash or CBI.

However, if you continue looking at GIA Excellent cut stones, you need to stay within these parameters if you want to get a stone that is close to ideal cut (which also equals a good HCA score). Your jeweler is not showing you well cut stones. GIA excellent cut is a VERY broad grade.

table: 54-58

depth: 60-62.3

crown angle: 34-35.0 (up to 35.5 if the pav angle is 40.6)

pavilion angle: 40.6-40.9
 
I strongly advise you to give the ideal parameters to your Jeweler that @diamondseeker2006 posted and if they can't source you a stone worth considering, then look at your options with the recommended online vendors that we suggest that are reputable. This is a big purchase and alot of money involved so take your time and do your research. Ask as many questions as you like on here and we will guide you to make the best decision.
 
My opinion the HPD diamond has less inclusions than the WF stone and is eye clean where the ACA Stone says inquire for eye cleanliness which could be a problem if you have eagle vision. My pick would be the HPD for the reason noted.

The fact it scores 0.9 on the HCA is a non issue with super ideal diamonds
 
You do not need to use the HCA for AGS000 stones (WF/HPD, etc). The HCA is to double check whether the angles work together on GIA XXX stones when you dont have the benefit of advances images, etc. When you have advances images and a stone cut to precision you don't need to use it.
 
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