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Black diamond with external inclusion

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Hi - I recently ordered a custom ring with a black diamond. When viewing the original stone, it looked in good condition but after polishing / setting it seems there's a large surface inclusion.

We saw a small but visible mark next to one of the prongs and after sending it back for the supplier to rotate to hide the mark under the prong, we discovered the small mark was actual part of a larger hidden inclusion.

First photo ("Rotated"): after sending back, the full inclusion can be seen

Second and third photos: the original placing, where a small straight line is visible (it catches the light)

 

We're assured the ring is structurally sound but have the option of replacing the stone (although the ring vendor is based in the US and I'm based in Asia so difficult to see the new stone properly). My questions are:

- How common / typical is this? I understand a lot of black diamonds have inclusions, but wondering if it's common whether this could easily happen with a new stone. (I also don't understand how we couldn't have seen this when viewing the stone.)

- Will this affect the grading?

 

Any other thoughts welcomed.

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Close up.png

Close up 2.JPG

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Not to put too fine a point on it, it's a chip. Possibly because there was a large feather (again not to put too fine a point on it, a crack), possibly because the setting process caused or enlarged the feather.

It affects durability; fancy blacks are not graded for clarity, but a stone with a feather of that size/location/type won't be easy to resell. On the other hand, unless this is a natural fancy black, the stone isn't worth a lot - if it bothers you, send it back to the vendor and get it changed; express mail is safe and cheap, even between Asia and the US. If it is a natural fancy black (expensive stone), I would definitely take the vendor's offer and get it replaced - ask for their assistance in shipping things back (postal insurance on jewellery is a nightmare for consumers).


Davide - Specialised Consumer Information and Assistance,
Diamonds by Lauren (http://www.diamondsbylauren.com)
davide@diamondsbylauren.com

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Note: I think the reference above about being rather expensive is to UNTREATED natural diamonds. Most fancy blacks are treated and it makes a big difference in the pricing. If you don't know, ask the seller. If you don't understand what he/she tells you, come back and ask us. 

I second the above suggestion. If it bugs you, send it back. It's not that hard and if your plan is to wear this daily for life, it's important that you are happy with it. 


Neil Beaty

GG(GIA) ICGA(AGS) NAJA

 

There's never a crowd when you go that extra mile.

Professional Appraisals in Denver

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Most of the black diamonds are blackened by color enhancement, your diamond is a natural black diamond, these diamonds often have cavities on the surface.

This should not affect the value or grading of the diamond

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On 4/4/2019 at 1:30 AM, diamonds-usa said:

Most of the black diamonds are blackened by color enhancement, your diamond is a natural black diamond, these diamonds often have cavities on the surface.

This should not affect the value or grading of the diamond

Are you the seller here?

  • Haha 1

Neil Beaty

GG(GIA) ICGA(AGS) NAJA

 

There's never a crowd when you go that extra mile.

Professional Appraisals in Denver

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