Mismatch between GIA cert and diamond image?

[HansenDeHCA]

Helping my friend to ask this question.

She bought a rb diamond from BN, placed the order, payment done, and waiting for the diamond to arrive BN factory now.

URL link: https://www.bluenile.com/au/diamond-details/LD16977089
GIA: 211920634

The GIA cert is showing a VVS2 grade, which minor cloud and pinpoints onside of this diamond. However, we noticed there are many white dots from the 360 view image, all over the diamond. Entirely mismatch with VVS2 grade ,and location of inclusions indicated on the chert.

My wild guess are
1) vendor did not clean the diamond when took the pic? there are are specks of dirt.
2) BN uploaded wrong pic and video, which did not belong to this cert.
And other possibility?
Shall we reject this diamond, before it landed to our doorstep?

Seeking for your view on this please.

 

[flyingpig]

Probably dust or lint. It happens all the time.
The diamond's appearance matches the proportions and numbers (58tb, 34ca, 40.6pa and 75lgh.

The probability of accidently uploading a video of a different diamond whose numbers somehow matches those of your diamond and cert?? Extremely low.

 

[HansenDeHCA]

Probably dust or lint. It happens all the time.
The diamond's appearance matches the proportions and numbers (58tb, 34ca, 40.6pa and 75lgh.

The probability of accidently uploading a video of a different diamond whose numbers somehow matches those of your diamond and cert?? Extremely low.

yeah man. the proportions are quite good for this.
If we change to the following diamond? how is it?

1.26-Carat Round Cut Diamond | Blue Nile AU

www.bluenile.com

 

[flyingpig]

yeah man. the proportions are quite good for this.
If we change to the following diamond? how is it?

1.26-Carat Round Cut Diamond | Blue Nile AU

www.bluenile.com

You are lucky to find two good stones.
They are about equal in my book. 93+ out of 100

Probably I would take the 2nd one. Very close call.

 

[HansenDeHCA]

You are lucky to find two good stones.
They are about equal in my book. 93+ out of 100

Probably I would take the 2nd one. Very close call.

thanks! but the HCA scores between 1.21 vs 1.27 are 0.7 vs 1.7
guess as long as below 2, I should not worry too much?

 

[flyingpig]

thanks! but the HCA scores between 1.21 vs 1.27 are 0.7 vs 1.7
guess as long as below 2, I should not worry too much?

The first one should not have leakage (mainly because it is 34/40.6) but optical synmetry cannot be assessed because it is tilted.

The second one has good optical symmetry and very little/no angle variations. 35/40.8 requires ASET/IS to assess leakage. But I do not see anything significant.

At worst, the 1st has minor angle variations and the 2nd has minor leakage.

Either can be 100. At worst, 90+.

 

[HansenDeHCA]

The first one should not have leakage (mainly because it is 34/40.6) but optical synmetry cannot be assessed because it is tilted.

The second one has good optical symmetry and very little/no angle variations. 35/40.8 requires ASET/IS to assess leakage. But I do not see anything significant.

At worst, the 1st has minor angle variations and the 2nd has minor leakage.

Either can be 100. At worst, 90+.

thanks for the advice. we changed the order to the 2nd diamond.

by the way, would like to learn about how to exam leakage based on c/p angles #? without aset or ideal scope. for a gia cert diamond, I thought as long as ...
- When pavilion angle is 40.8 ° any crown angle above is okay
- When pavilion angle is 40.6 ° lean toward crown angle 34.5 – 35.0 °
- When pavilion angle is 41.0 ° lean toward crown angle 34.0-34.5 °
- When pavilion angle is 40.8 ° and crown angle is 35 ° lower halves need to be 80%

 

[flyingpig]

thanks for the advice. we changed the order to the 2nd diamond.

by the way, would like to learn about how to exam leakage based on c/p angles #? without aset or ideal scope. for a gia cert diamond, I thought as long as ...
- When pavilion angle is 40.8 ° any crown angle above is okay
- When pavilion angle is 40.6 ° lean toward crown angle 34.5 – 35.0 °
- When pavilion angle is 41.0 ° lean toward crown angle 34.0-34.5 °
- When pavilion angle is 40.8 ° and crown angle is 35 ° lower halves need to be 80%

We can make some generalization, but that is going to be a very very long discussion (which I do not want to start) of endless combinations of angles and numbers. Plus, it is not going to be accurate.

You need the ASET/IS to accurately assess diamond's light return and leakage characteristics.

My assessment on these diamonds are based on both videos and reports. To make reasonably accurate assessment without the ASET/IS, you just need to view and compare thousands of diamonds against the reports.

Lastly, when you get your diamond, you can make your own ASET and IS. Just roll up some color paper.

DYI ASET (Nerdy Stuff). Ver 2.0

Hi. I am uploading this for those who want to assess their diamonds bought online without the ASET images or shopping at a B&M and don't want to spend $ on the ASET or IS scopes There is already a thread about this. https://www.pricescope.com/community/threads/diy-aset-and-ideal-scope.226126/...

www.pricescope.com

 

[HansenDeHCA]

We can make some generalization, but that is going to be a very very long discussion (which I do not want to start) of endless combinations of angles and numbers. Plus, it is not going to be accurate.

You need the ASET/IS to accurately assess diamond's light return and leakage characteristics.

My assessment on these diamonds are based on both videos and reports. To make reasonably accurate assessment without the ASET/IS, you just need to view and compare thousands of diamonds against the reports.

Lastly, when you get your diamond, you can make your own ASET and IS. Just roll up some color paper.

DYI ASET (Nerdy Stuff). Ver 2.0

Hi. I am uploading this for those who want to assess their diamonds bought online without the ASET images or shopping at a B&M and don't want to spend $ on the ASET or IS scopes There is already a thread about this. https://www.pricescope.com/community/threads/diy-aset-and-ideal-scope.226126/...

www.pricescope.com

thank you.