Diamond Query: Picking a High-Quality 1-Carat Round Diamond with Idealscope Images

| Anonymous Reader

Hi Sebastian – I’ve been hunting around for a diamond for a while now, and after working with brick and mortar stores, I think I’ve come to the realization buying a diamond online is the way to go. With that, could really use your help and assessment of this diamond:



* My gem budget: $16k, although ideally I’d like to spend $14k.
* Total ring budget: $18k.
* I’m looking for a very particular diamond (not necessarily biggest bang for the buck):
* Color: D
* Carat: 1.1 to 1.3 (could go slightly smaller for the right diamond!)
* Clarity: VS1 or better
* Fluorescence: None/Negligible
* Crown Angle: 34.3 – 34.9
* Pavilion Angle: 40.6 – 40.9
* Must have excellent Hearts and Arrows
* Must have excellent IdealScope/ASET performance


* What do you think of the hearts and IdealScope images?

sku-3466188 Aset   sku-3466188 Idealscope

* HCA rating is a 1, which seems low.  But the optical performance seems good. What are your thoughts on that?
* James Allen customer service refused to send me an ASET image of this gem. They say IdealScope images are all they provide for True Heart diamonds. Should I be concerned?
* Overall, what do you think?

And thank you in advance for even taking the time to look at this and provide feedback! Really appreciate the guidance you are providing to folks just like myself, hoping to find that perfect diamond for their loved ones.

PS: Here was a backup diamond I found, but really didn’t like the obvious defects. Seems like a suspicious VS1 to me.


Your Diamond Teacher |

Thank you for your inquiry. I am happy to help.

The two diamonds below, that you selected from JamesAllen.com are both an excellent choice. If I put both of these diamonds in front of you, in person, you wouldn’t be able to tell the difference between them.

If you twisted my arm to make a choice, I would select diamond sku 3634658. There is no reason to pay $3K more for a VVS1, other than you like the way it sounds on paper.

Regarding the ASET images…..the images are better for fancy shaped diamonds. Idealscope images are the best for round shaped diamonds, which is why James Allen provides Idealscope images instead of ASET images for round diamonds.

There is nothing to be concerned about here. An Idealscope image will provide the information you need regarding the diamonds ability to maximize light reflection.

As for the results of the Idealscope images for the two diamonds you selected, I have attached a link to my website, which shows how to read the Idealscope images.


The Idealscope images for these two diamonds are very good. There is some whitish areas, which indicates light leakage, however, I am not concerned. This is not something the human eye will pick up in person.

In my opinion, you can confidently purchase either one. It really comes down to which one you prefer. I hope this helps.  Please let me know if you have any additional questions.

| Anonymous Reader

Sebastian – thank you for your feedback and guidance! Appreciate all that you do to help out folks like me! I ended up purchasing this one:

sku-3465920 sku-3465920 Idealscope

I noticed a bit of yellow on the 1.13ct diamond, and decided to go with a GIA ‘D’ cert. Also liked this IdealScope image! Couldn’t be happier 🙂 Thanks again!