Help with HCA and Cut

[youngdiamond]

I hope someone can help me understand better. How can a round brilliant diamond HCA score be between 0-1, but then be a GIA Very good cut and AGS 0 (ideal)?

TIA

 

[tyty333]

Post the GIA/AGS reports.

 

[lovedogs]

I'm sure it's theoretically possible for a stone to be GIA VG and AGS 0, though I've never seen it (but that doesn't mean much as I am not a vendor). However, I imagine it would be rare since GIA is much more lax on cut than AGS.

 

[Karl_K]

The GIA system hates shallow pavilions, AGSL tolerates them to a degree and the HCA likes them.
So ags0 and gia vg and hca under 2 is very possible.
Also possible is agsl 1 and gia vg and hca under 2 for the same reason.

 

[Karl_K]

Each system also gives different consideration to painting and digging. GIA is the most strict followed by AGSL and the HCA does not take it directly into account.

 

[Karl_K]

Post the GIA/AGS reports.

This is the best answer ^^

 

[Karl_K]

While we are waiting for reports the particulars of the girdle other than painting digging can also cause a gia vg/agsl0 split at times.

 

[youngdiamond]

Each system also gives different consideration to painting and digging. GIA is the most strict followed by AGSL and the HCA does not take it directly into account.

Thank you, does it mean that a diamond could still look nice even if to GIA standards its a very good cut, AGS 0 and the HCA score is 0.7?

 

[youngdiamond]

This is the best answer ^^

I would post, however, I can't since its a lab diamond and only natural diamonds can be posted on this forum :/

 

[youngdiamond]

Post the GIA/AGS reports.

I can't post it here because it's not a natural diamond :/

 

[Karl_K]

Thank you, does it mean that a diamond could still look nice even if to GIA standards its a very good cut, AGS 0 and the HCA score is 0.7?

In general yes it could but there is not enough info to say where one particular one falls.

 

[youngdiamond]

In general yes it could but there is not enough info to say where one particular one falls.

Understood.

https://imgur.com/a/8z1JFiV

this is the hca score and report. If you don't mind looking at it, it would be immensely helpful!

 

[Karl_K]

I can't post it here because it's not a natural diamond :/

Start a post in the mmd forum and you cn post it and ask the question.

Lab-Grown Diamonds/Man-Made Diamonds (MMD)

Learn about and discuss everything on lab-grown diamonds here! No simulants (CZ, Moissanite, YAG, etc), please.

www.pricescope.com

 

[Karl_K]

Understood.

https://imgur.com/a/8z1JFiV

this is the hca score and report. If you don't mind looking at it, it would be immensely helpful!

Its the 40.5 pavilion which if you have super up close vision might be an issue but for someone with glasses its not.

 

[youngdiamond]

Its the 40.5 pavilion which if you have super up close vision might be an issue but for someone with glasses its not.

What would someone with close vision see with such a nice pavilion?

 

[Karl_K]

What would someone with close vision see with such a nice pavilion?

A bit more darkness than some combos.

edit.. when viewed close only.

 

[youngdiamond]

A bit more darkness than some combos.

edit.. when viewed close only.

Thank you, that means its not a good performing diamond? Your answers have been rlly helpful!

 

[Karl_K]

It will take pictures to tell more.
The combo if reasonably well executed can work for many people.

 

[youngdiamond]

It will take pictures to tell more.
The combo if reasonably well executed can work for many people.

Understood, im seeing the stone tomorrow and will take videos - I'll post it on the lab forum. Thank you!