FCD with the following comment in the GIA report: "a foreign material has been artificially applied to the surface, which precludes quality analysis"

[La2020]

I saw this Fancy Colored mined Diamond with the following report. What does it mean to have a foreign materially artificially applied to the surface?

 

[MMtwo]

I saw this Fancy Colored mined Diamond with the following report. What does it mean to have a foreign materially artificially applied to the surface?

yikes
sounds like there is a non-durable coating on the diamond, assuming it is a layer of color.

How Diamond Treatments Can Impact Color, Clarity and Value of a Diamond | 4Cs of Diamond Quality by GIA

Treated diamonds can be difficult to identify. Learn about what treated diamonds are and how diamond treatment impacts color, clarity and value.

4cs.gia.edu

 

[La2020]

yikes
sounds like there is a non-durable coating on the diamond, assuming it is a layer of color.

How Diamond Treatments Can Impact Color, Clarity and Value of a Diamond | 4Cs of Diamond Quality by GIA

Treated diamonds can be difficult to identify. Learn about what treated diamonds are and how diamond treatment impacts color, clarity and value.

4cs.gia.edu

Wow thanks! This was found under the mined fancy color diamond, I did not realize that it is a color created diamond.

 

[MMtwo]

Wow thanks! This was found under the mined fancy color diamond, I did not realize that it is a color created diamond.

I'll be first to admit I offered you a layman's level guess. I am sure someone else will chime in with further clarification for you. It's good that there are GIA reports!

 

[ForteKitty]

They can color-coat mined diamonds as well, it's not limited to lab diamonds. That's a different process than HPHT.