What''s this?

[kenny]

The newer AGS report has two new numbers placed onto the side-view plot.

I think the upper one is upper ratio.
Is 50 best?
What about lower one?

What numbers are best?

 

[klavigne]

I believe it''s the length of the stars.

 

[belle]

it is the star and lower girdle facets (unrounded!)

is there a ''best'' of anything?

 

[kenny]

Yes

D is best.
IF is best.
A very thin girdle is not good for a tension setting - for that I'd say Medium is best.

The numbers mean something.
(If you are one of the "don't buy the paper buy the stone" people then I'll have wait for a response from one of the techies who know what are good numbers to shoot for.)

Now, the beauty of the HCA is it thankfully takes several things into account.
That HCA number is very useful, *especially* for the Internet shopper who can't see the stones.

Shopping can get hoplessly complex if a layperson like me attempts to understand everything or take everyting into account.
I was just wondering if these numbers are something to pay attention to.

 

[klavigne]

Kenny,
These numbers have to do with the "Hearts and Arrows". Basically, from what I''ve come to understand, is that they determine the length of the arrow in relation to the length of the heart. I''d say that those numbers would be typical of an Ideal cut AGS. Maybe we can get a cutter to explain it better so we all understand the exact meaning and which numbers are better to hunt for.
I for one agree that there is a "best", sorry belle ;-(
Knowing which range of numbers encapsulate the "best" would be helpful, but I doubt anyone will agree enough to get a set of numbers. We are going to dance around the "personal preference" song again.

 

[Mara]

kenny, if you want to know more about the importance of numbers on the stone...it'd probably help if you posted more numbers than just the one image with 2 numbers.

what's best? lemon pie.

 

[kenny]

Thanks Mara, but I'm comparing specs of 7 stones right now, and have one on hold.

I have seen other stones vanish while being discussed here, and the original buyer missed out.
It would be crazy to ask WF to put 7 stones on hold.

If those two numbers mean nothing without the other numbers then someone can say so.
Sorry to be secretive but I just don't want to narrow my choices.

And everyone knows apple pie is better - fresh from the oven with flakey crust and with vanilla ice cream please.

 

[Mara]

Kenny Kenny Kenny...

EVERYONE knows it's Lemon Pie.

If you have the stones on hold with WF....I'd ask Brian or John to give you their thoughts on them. I totally trust either of them to eyeball stones for me. Esp when it's down to splitting hairs. They both know more than their share of how the star and lower girdle facets come into play.

Oh and IF isn't best. FL is. And even that is still flawed. Lemon pie.

 

[kenny]

Unfortunately I have a disease.
I am one of those evil engineers.

We feast on DATA!

Data Data and more Data.
You can never have enough data!

 

[belle]

you have proven my point as to why there is no ''best''.

unless you consider pie.... lemon pie is always better than strawberry!

the numbers absolutely mean something but they mean something in relationship to the whole diamond. just like you can''t say a 55% table is the best. you have to look at everything else with it. that''s why the idealscope is so very handy, you can see immediately the impact of everything working together. including the lgf''s! no report numbers needed.

the hca is a great tool but it does not take into account these minor facets or optical symmetry which play a big role in diamond looks and performance. it is all of the information together.

again, these numbers are important but there is no one ''best'' set of numbers. there may be a ''best'' for certain individuals, but you can''t say a diamond with 50% stars and 78% lgf''s will always look better than a diamond with 55% stars and 75% lgf''s. (well...youi can, but not everyone would agree!) for what it''s worth, i tend to like the 78% lgf range......just right.

 

[klavigne]

Kenny, I''m laughing my ass off. I''m an engineer too so I know how this can drive you crazy. I just try to remember that these pet rocks of ours are only little chucks of carbon subjected to heat, pressure and time. Try not to dwell to much on it, after all, they''ll be here long after we''re all long gone, so no need to lose sleep over a few numbers.
But just so you know, I''m hoping to get a real answer to this question too.