Help is this a good diamond?

[scintillate]

Thanks for educating. How about the crystal inclusion? But will pavilion twist have adverse effects like light leakage or less sparkles or something?

 

[DejaWiz]

Thanks for educating. How about the crystal inclusion? But will pavilion twist have adverse effects like light leakage or less sparkles or something?

I wouldn't start to worry about crystal inclusions until SI1, maybe even SI2 (me, personally).
Yes, pavilion twist can noticeably reduce light return (increased light leakage) which will reduce optical performance.

 

[Karl_K]

Decent, but not as precise as the first GCAL 8X.
This one has a slightly larger table with a shallower crown angle resulting in a slightly flatter crown height...will still be pretty fiery, but will probably favor brilliance in indirect lighting in my opinion. May also have some very slight pavilion twist, but not 100% sure:

check the hearts.
That the triangles exist is just a combo thing, that they are uneven can be a result of photography/tilt or slight variations.
Look at the length of the arrow shafts under the table, they are all the same length with no tilt. Longer points to the direction of tilt.
Check hearts and other images.
Either way its not a lot.

 

[Karl_K]

See what lots of tilt does to the arrow shafts and the triangles beside them:

 

[Garry H (Cut Nut)]

See what lots of tilt does to the arrow shifts and the triangles beside them:

Is that bad Karl?

 

[Karl_K]

Is that bad Karl?

No, its a way of telling if a stone is tilted in a photo.
If the arrow shafts under the table are all the same visible length then there is little to no tilt.
Longer arrow shaft points direction of tilt.

 

[Garry H (Cut Nut)]

No, its a way of telling if a stone is tilted in a photo.
If the arrow shafts under the table are all the same visible length then there is little to no tilt.
Longer arrow shaft points direction of tilt.

Ok, gotcha, thx Karl

 

[DejaWiz]

Thank you for another great teaching moment, Karl_K!

 

[scintillate]

No, its a way of telling if a stone is tilted in a photo.
If the arrow shafts under the table are all the same visible length then there is little to no tilt.
Longer arrow shaft points direction of tilt.

Thanks for the explanation. So does that stone look good to you overall?

 

[Karl_K]

Thanks for the explanation. So does that stone look good to you overall?

yes. It passes all the tests.

 

[DejaWiz]

Thanks for the explanation. So does that stone look good to you overall?

It's a blue nuance - just bear that in mind.

 

[Karl_K]

It's a blue nuance - just bear that in mind.

not seeing signs of it being bad.
Might just have a little hint but unlikely eye visible.

 

[scintillate]

Was also considering this one:

Loupe360

loupe360.com

or this one:

Loupe360

loupe360.com

Loupe360

loupe360.com

But don't really know how to read the videos or what to look at. They all look the same to me.
Plea

Was also considering this one:

Loupe360

loupe360.com

or this one:

Loupe360

loupe360.com

Loupe360

loupe360.com

But don't really know how to read the videos or what to look at. They all look the same to me.
Please help!

@Karl_K @DejaWiz Would you be able to show me how to see the crystal and cut precision issues of these videos? I mean what issues are we seeing? For example, is this a crystal issue?

 

[DejaWiz]

@Karl_K @DejaWiz Would you be able to show me how to see the crystal and cut precision issues of these videos? I mean what issues are we seeing? For example, is this a crystal issue?

You got it! That is CVD stria/growth method graining!

 

[DejaWiz]

not seeing signs of it being bad.
Might just have a little hint but unlikely eye visible.

I humbly disagree, good sir - I think it's quite a bit bluish-gray in body hue compared to the other E color GCAL 8X that were asked about.

 

[scintillate]

You got it! That is CVD stria/growth method graining!

They're not easy to find especially on the other stones. What about cut precision issues? How do you find them from the videos?