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Inverse Proportion Variations - choose your favourite Crown and Pavilion Combo

And in this one I have tilted the diamond by 7 degrees to show what one eye will see.
Imaging the same thing for the other rotated 180 degrees.
https://youtu.be/3e_FXkcmlnw
 
I dont have a favorite there are many different combinations that can produce wonderful diamonds.
 
Karl_K said:
I dont have a favorite there are many different combinations that can produce wonderful diamonds.
Click to expand...

That IS the point :-)
 
Serg said:
it is technical video how to use "Sweet line" during allocation process.
Coming HPO version has similar functionality for Fancy cuts .
Click to expand...

Wow - that is amazing :o

That must have taken a massive amount of work, Serg!

The Sweet Line approach is really good, I think more needs to be made of it, and if I was a cutter, this sort of tool would be unbelievably useful.

Thinking out loud... am I correct in thinking that the options along the Sweet Line will still have their different 'flavours'? (i.e. high crown = more fire, low crown = more brilliance)

I think I am correct but thought I would check!



Garry H (Cut Nut) said:
I have varied the crown 5 times more then the pavilion in this video.
https://youtu.be/jer7xapEBEo
Click to expand...
This is also an amazing video, thank you (and the 7-degrees tilted one - tilted ASET is the way forward! :razz: lol). It's really useful to see how the ASET changes as the weight shifts from crown to pavilion and back again :)

The very shallow (29 degree) crown has a great deal of red in it in the tilt ASET - which would accord with the general view that low crowns are good for brightness?

The very high crowns (36 degrees +) in tilt ASET are interesting - really not that much leakage visible, with a good mix of red/green/blue, which seems to suggest it would be a very visually interesting stone :))


Another thread to bookmark and point people at! :D lol
 
"What makes a diamond an "interesting stone"? That is a great question. Garry is showing how many often less well thought of configurations have real eye appeal. What we fall back on is the eternal question of what makes something "beautiful"? Different appearances and choices are definitely useful instead of attempting to convince us that only those with a very narrow set of parameters maximize beauty and light. The market shows that consumers love choices and not everyone will choose the same look in a diamond. Even the most observant shoppers frequently choose diamonds which appeal to their own sense of beauty, but don't exactly fit the range or norms for finely cut, Ideal or Excellent cut,, diamonds.

Do these videos give evidence that our current way of grading cut is overly narrow and that we are missing an important number of diamonds that should be graded better for cut quality?

I love the videos!!
 
I think the next level to this is to cut some 1ct MMD from identical-quality rough, each stone being a step in the video or a step along the Sweet Line, and putting them side by side in the same lighting, to demonstrate how ASET performance translates to 'real life' performance :)

I appreciate something like that is not the work of a moment nor free, though... :???: :lol: lol


I guess that if I ran a diamond shop, such a display piece (maybe even a diamond for each of the combos in the ASET tables?) could be an interesting conversation piece and also an education tool, from which a customer could pick what appeals to their eyes more :)

I imagine that if the shop was an MMD vendor with the ability to custom-order to whatever the preferred specification was (if we assume that MMD rough is more consistent and easier to cut to preferred specs...), it would mean a customer getting exactly what they wanted and no risk of carrying stock that didn't sell!




On a totally unrelated note, has anyone got a lot of money to invest in a new Custom Order MMD shop...? :???:

:lol:
 
OoohShiny said:
I think the next level to this is to cut some 1ct MMD from identical-quality rough, each stone being a step in the video or a step along the Sweet Line, and putting them side by side in the same lighting, to demonstrate how ASET performance translates to 'real life' performance :)

I appreciate something like that is not the work of a moment nor free, though... :???: :lol: lol


I guess that if I ran a diamond shop, such a display piece (maybe even a diamond for each of the combos in the ASET tables?) could be an interesting conversation piece and also an education tool, from which a customer could pick what appeals to their eyes more :)

I imagine that if the shop was an MMD vendor with the ability to custom-order to whatever the preferred specification was (if we assume that MMD rough is more consistent and easier to cut to preferred specs...), it would mean a customer getting exactly what they wanted and no risk of carrying stock that didn't sell!




On a totally unrelated note, has anyone got a lot of money to invest in a new Custom Order MMD shop...? :???:

:lol:
Click to expand...

Cutwise

cutwise.com cutwise.com
Screenshot 2020-07-23 21.36.57.png
 
@OoohShiny,
Unfortunately, optical performance does not trivially scale up from mêlée diamonds (such as 1 mm stones) to large diamonds (such as 1 carat stones). There are two problems: girdle thickness, and facets and flashes being too small to distinctly see.

I would be interested "in a new Custom Order MMD shop". Feel free to reach out to me via e-mail. I doubt the money I have available would be anything more than seed capital, though. A Silicon Prairie-style private offering might work. I wonder how much of an investment would be needed to require PriceScope members to switch from "consumer" status to "trade" status on PriceScope.
 
Serg said:

Cutwise

cutwise.com cutwise.com
Screenshot 2020-07-23 21.36.57.png
Click to expand...

I love this 8-)

Thank you for the link to it, and for the hard work to create it!

I need a lot more time to look at it and think about everything :)

There is so much information that it is almost overwhelming!


Do I recall you say previously that you are using the stones to train people?

It is excellent if you are - what has the feedback been??


If you are bringing them all to the UK at any point, please let me know :D lol
 
jasper said:
@OoohShiny,
Unfortunately, optical performance does not trivially scale up from mêlée diamonds (such as 1 mm stones) to large diamonds (such as 1 carat stones). There are two problems: girdle thickness, and facets and flashes being too small to distinctly see.

I would be interested "in a new Custom Order MMD shop". Feel free to reach out to me via e-mail. I doubt the money I have available would be anything more than seed capital, though. A Silicon Prairie-style private offering might work. I wonder how much of an investment would be needed to require PriceScope members to switch from "consumer" status to "trade" status on PriceScope.
Click to expand...

Hi jasper :)

Garry has introduced you as being a very knowledgeable veteran, so I am keen to learn more about your work!

I am very busy for the next couple of weeks but I will make time to look through your website as soon as I can :))


The 'custom MMD shop' is just an idea I've had in the back of my mind :) but I am definitely not a 'businessman' and have done zero research as to what take-up might be or if there is even any interest!

I also have zero money at the moment :lol: as I'm living off rapidly dwindling redundancy money while attempting to get another job, but I guess the benefit of a 'custom MMD' shop is that it could be:

- online (only?)
- low cost to set up
- limited (zero?) stock requirements, therefore limited (zero?) capital investment/risk
- international in scale and therefore have a large target market

However... one would need to:

- identify/source/maintain high quality rough,
- identify/procure/maintain high quality cutters,
- create/pay for a working relationship with (a) grading house(s)
- create a brand and undertake marketing
- create and pay for shipping account(s) and insurance(s)
- establish a Returns policy (that wouldn't bankrupt one if used :???: lol)
- etc.


I think the (online) niche is already be being filled by Serg and Rhino/Jon, though :D amongst others, and I would never want to tread on any toes, even if I was in the position to do anything!

It would be interesting to see if there was local demand, though - targeted marketing towards the local wedding/engagement market would probably be a good start.


Anyway, this is totally off-topic and I do not want to steal any ideas or work from Serg and the other Trade people (yourself included) so I think it's probably wise to 'park' this somewhat wandering 'thought experiment' here... :))

Thank you for your interest in it!


(I do realise posting all this means that, if it is any good as an idea, it risks being 'stolen' by someone else, of course!)
 
@OoohShiny,
I'm not in the jewelry trade.
I'm an engineer/computer programmer who is willing to "check the math", "check the assumptions", and "see where that leads".

Good luck with the job search.
 
@Garry H (Cut Nut) , @Serg , on the chart, some of the images show that the VG cut in some cases looks as good as the Ex...like the one with 40.16 pav, 34.55 cr.
 
Mlh said:
@Garry H (Cut Nut) , @Serg , on the chart, some of the images show that the VG cut in some cases looks as good as the Ex...like the one with 40.16 pav, 34.55 cr.
Click to expand...
There is a saying that is as old as aset itself you can use aset to design some pretty crappy diamonds that pass the aset test.
Just for fun, this one even has the same stereo brightness rating that that super ideals do and better than some.
funny.jpg
 
Karl_K said:
There is a saying that is as old as aset itself you can use aset to design some pretty crappy diamonds that pass the aset test.
Just for fun, this one even has the same stereo brightness rating that that super ideals do and better than some.
funny.jpg
Click to expand...

Wow :) what does that one look like in real life? What are those #s? Thanks @Karl_K !!
 
More of the story...
lower facets 76.2 and 50% stars.
funny1.jpgsdieview.jpgnumbers.jpg
 
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Mlh said:
That is so great!! I am guessing it would look huge...yes?
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yes and it would look totally dead too.
Bright is easy with a RB making it have a great balance of brightness,contrast, scintillation and fire is not so easy which is why everyone takes the easy way and cuts near modern tolk for performance cuts and steep deep for the $$$.
What Serg is trying to do is expand the concept of performance cuts to an expanded range of proportions at the cutter level.
But just using ASET is a false trail which is not a trap Serg fell into but is the reason a rejected proportion set could have a good looking ASET.
It will be interesting to see if anyone takes it up, AGSL was not able to do it.
 
Karl_K said:
yes and it would look totally dead too.
Bright is easy with a RB making it have a great balance of brightness,contrast, scintillation and fire is not so easy which is why everyone takes the easy way and cuts near modern tolk for performance cuts and steep deep for the $$$.
What Serg is trying to do is expand the concept of performance cuts to an expanded range of proportions at the cutter level.
But just using ASET is a false trail which is not a trap Serg fell into but is the reason a rejected proportion set could have a good looking ASET.
It will be interesting to see if anyone takes it up, AGSL was not able to do it.
Click to expand...

So fascinating @Karl_K ! Thank you for explaining!!
 
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