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What do you think of this SI2 with twinning wisps?

No one has any thoughts on the stone?
 
Looks ok. There are black and white pics that are better for evaluation. What did JA say? Eye clean? With an SI2, with pinpoints and surface graining, I would have to check it out first. You can return it.
 
LLJsmom said:
Looks ok. There are black and white pics that are better for evaluation. What did JA say? Eye clean? With an SI2, with pinpoints and surface graining, I would have to check it out first. You can return it.
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Thanks! The sales reps I have spoken to have said they believe it to be eye clean but I am waiting to hear back from a gemologist who has viewed the stone in person.

I am located internationally, so shipping to/from is a pain in the butt however you are correct - I could always return it! Overall do you think the performance would be considered good/great? I am a bit wary about the 35.5 crown angle...
 
In general, twinning wisps are good inclusions to have in an SI2, as they tend to be more eye-clean than say a big crystal. But I would make sure that it is not causing transparency issues.
 
CareBear said:
In general, twinning wisps are good inclusions to have in an SI2, as they tend to be more eye-clean than say a big crystal. But I would make sure that it is not causing transparency issues.
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Thank you! Is it as simple as asking JA before I purchase, or would I have to assess that myself after purchasing the ring? I have never purchased from them before so I am not sure how forthcoming their sales associates and gemologists are...
 
patriots2018 said:
Thank you! Is it as simple as asking JA before I purchase, or would I have to assess that myself after purchasing the ring? I have never purchased from them before so I am not sure how forthcoming their sales associates and gemologists are...
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JA's gemologists should be able to assess the stone to make sure it is eye-clean and has no transparency issues. A 35.5 crown angle paired with a 40.6 pav angle is not a concern. But the spread isn't great due to the 62.5 depth, so you are losing approx .1mm in diameter, which is fine if the price is good. Have you done a price comparison against other 2ct H SI2s?
 
that looks great for an SI2, wow! $16k for 2 carats (with H color) is a steal!
 
Thank you all! I will post the gemologist's comments once received!
 
CareBear said:
JA's gemologists should be able to assess the stone to make sure it is eye-clean and has no transparency issues. A 35.5 crown angle paired with a 40.6 pav angle is not a concern. But the spread isn't great due to the 62.5 depth, so you are losing approx .1mm in diameter, which is fine if the price is good. Have you done a price comparison against other 2ct H SI2s?
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Yes, I have compared the prices of various stones ranging from G-H, VS2-SI2 and found this to be the best compromise in terms of (1) carat weight [getting over the 2 ct hurdle is not important to my S/O however it is to me]; (2) diameter of the stone itself; (3) impact of inclusions (4) certificate rating [having an AGS ideal cut is important to me (although I can't pinpoint a reason why other than the paper says it should be better!!) and (5) color [we aren't overly color sensitive, so I thought H would be a good compromise. Overall most other SI2's and SI1's with similar specs to the above diamond were ~17-18k from what I have seen thus far.

I am hoping that given the stone is an AGS0 it will perform well but does anyone know (relatively) how standard AGS0 stones perform against the "super ideal" and "true hearts" stones? In my mind I am expecting less fire and brilliance in comparison to a "hearts and arrows" diamond, but I am not sure if that will actually be the case?
 
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As a trade member I am not allowed to criticize or recommend another vendor's stone. But I can make general comments about features of the diamond in response to your questions.

First, Si2 is a big category with a wide range of potential inclusion types and combinations. Some are benign, some might be easily visible to the naked eye, and some may adversely impact transparency. Twinning wisps are a diffuse type of inclusion (like clouds or graining) that are often hard to see, and are therefore desirable from an eye-clean standpoint. However, their nature does tend to interfere with light as it moves through the diamond if the wisps are too numerous, too dense, or located in strategic positions within the diamond.

A grading report communicates the grade setting inclusion by listing it first under Keys to Symbols below the stone plot. It also mentions under "comments', if there are other features not included on the plot.

As a general rule where you have a lower clarity grade set by light scattering inclusions, along with comments indicating additional features of a similar nature, the prudent thing to do is to have the diamond examined by an independent expert not connected to the sale, before you are fully committed to the purchase.
 
CareBear said:
In general, twinning wisps are good inclusions to have in an SI2, as they tend to be more eye-clean than say a big crystal. But I would make sure that it is not causing transparency issues.
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I completely agree - it looks eye clean from the video especially when you zoom out, but I'd want to make sure there aren't any transparency issues. You could also have the stone evaluated by a reputable independent appraiser (there are some PS recommended ones https://www.pricescope.com/appraisers) to get an unbiased evaluation of the inclusions and whether or not they effect performance.
 
With Bryan and ac, get an appraiser to check it out, if it's ok then that's great!
 
Thank you so much! I will take all of your advice and purchase the stone provided JA gemologists do not come back indicating there are transparency issues. Once I receive it I will seek out an independent assessment. Does anyone know approximately how long the assessments take?
 
patriots2018 said:
Thank you so much! I will take all of your advice and purchase the stone provided JA gemologists do not come back indicating there are transparency issues. Once I receive it I will seek out an independent assessment. Does anyone know approximately how long the assessments take?
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Transparency assessment does not take long at all. It's a purely visual exam, best using a sample stone of similar size, cut quality, and color with a clarity of VS1 or above. Comparing the stones side by side, any appreciable transparency deficit will become apparent.

But if you enlist the services of an appraiser, you will want to have him do a routine gemological review including verification of the report details. That will take a bit longer. Most appraisers will schedule an appointment so that they can perform all required services with you present.
 
Texas Leaguer said:
Transparency assessment does not take long at all. It's a purely visual exam, best using a sample stone of similar size, cut quality, and color with a clarity of VS1 or above. Comparing the stones side by side, any appreciable transparency deficit will become apparent.

But if you enlist the services of an appraiser, you will want to have him do a routine gemological review including verification of the report details. That will take a bit longer. Most appraisers will schedule an appointment so that they can perform all required services with you present.
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Agreed, I would seek out an independent local jeweler in your area and ask to see a well-cut, higher clarity stone (something in the VS level without any clouds or twinning wisps listed on the cert) of similar size and color. You should be able to do the assessment yourself. Does the stone look "foggy" or "cloudy" next to the higher clarity stone? If so, then the twinning wisps are likely affecting transparency.

Just looking at the JA video, I would say that the twinning wisps do look like they're affecting the transparency. But it's really hard to tell from videos alone. Really the only way to tell is the in-person test.

Hope it turns out well for you. The stone otherwise looks nice, with a good IdealScope image and good angles. But even if it looks off, you'll have no problems returning it with JA's excellent return policy. :)
 
Thanks again for the advice. JA's gemologist returned their summary:

I am pleased to inform you that 4481584 is a dazzling eye clean diamond. This diamond upon inspection showed no visible inclusions that would be seen or affect the diamonds transparency. It is a true “H” color that faces up whitest of the pair to a gemologist eyes. Excellent brilliance and fire that spreads nicely throughout, making the diamond bright and lively. With a gorgeous pattern in scintillation, this diamond is definitely a superb top choice.

I will purchase it and update once it is received. Thanks again everyone!
 
Does a stone have to be unmounted to be accurately appraised by an independent appraiser?
 
TweetyBird23 said:
Does a stone have to be unmounted to be accurately appraised by an independent appraiser?
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It's not necessary for basic verification and checking for transparency. The diamond is inscribed and has a stone plot to identify it.
 
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