Brainstorm:A consumer commissioning a cut diamond from rough

[Garry H (Cut Nut)]

Re: Brainstorm:A consumer commissioning a cut diamond from r

I should have added Yoram, that Sergey and Janak started a factory called LTM, in Surat India, that puts many of their innovative planning and production tools into action. This showcase factory has been a great success and provides contract polishing services to the trade and specialises in very large complex rough and fancy color cutting.
The link https://www.dropbox.com/sh/gkz59nfan4zgho7/AAC8U8WT-ganbvHAccwkz_6Aa#lh:null-S838.JPG I posted on the earlier post are stones that LTM has repolished for clients.
I have sent a few stones there - notably some low grade rough pinks that were in the wallet of my friend Ewen Tyler, who initiated the search for the Argyle mine and who has been involved in every diamond mine discovery in Australia (3 are still active). He used the roughs as dinner table 'show and tell'.

 

[Serg]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Here is a take that the Cut Group (Serg, Yuri, Janak Mistry and myself) proposed in 2009 and continue to develop appropriate technologies to enable cutters to list various cut options from the same piece of rough, and as Paul notes, turn the investment faster.
There is an entire 6 page article that I have asked Andrey and Erika to review and post in Articles> Diamond News.

but here is a screen shot of part that is relevant to discussions here:

A few interesting questions for you on this subject Garry.
Since 2009..., why is it not rolling?
What is keeping this project from taking off?
And you mention twice price adjusting according to an open "price-list", what price list are you aiming to? And if we can get a glimpse at that price list structure and how it's build?

it is just concept to change diamond industry with 3 Goals:
1) Retain profit for manufactures
2) Increase consumer confidence
3) Compete with other Luxury markets

there are many technical problems to do it in real life right now.
see short list below:
a) Cheap Technology to predict Color, Clarity , Mass, Beauty with high accuracy. mass is not problem, but to predict Color , Clarity in 2009 you have polish many windows in rough stage and do many expensive and time consuming measurements( technically it is possible but it is profitable only for above 5-10 carat VS rough)
b) in rough Stage delivery to Consumer exact Visual information about Beauty, Clarity, Color future polished diamonds.
for big diamonds and few consumers per day it is possible but there are not system yet for thousand transaction between consumer and rough yet. and again it is too expensive yet even for 1ct polished diamond.
c) at least 5 big manufactures have to freeze 10% annual rough stock in semipolish stage . huge investments when industry has problem with cash flow ( in same time manufactures froze 50%-100% annual production in polished diamonds. it is reason why they have not money now )
e) Jeweller network with standard consumer light conditions and well educated staff.( it is most problematic task and huge investments)
d) Library of High Performance Fancy cut designs

 

[Garry H (Cut Nut)]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Janak has given permission to post this example. There is a PDF that I can send to interested parties by email also.
This 148ct rough was estimated to yield +15 Ct J IF + a few other smaller polish by its owner.
https://www.dropbox.com/s/ddku4vl3a46jbpl/SG_148_Rough Diamond.mov

The movie for the polish of 30.28 Ct SI1 Fancy Yellow can be found at: https://www.dropbox.com/s/t6eae8zgz...9_1.4X_WBG_6D_GRAYCOAT_CHROMA+15_CCP_HIGH.mp4

You can see in the movie that the stone is almost colorless from the side view. It has been graded as Fancy Yellow (Not Fancy Light!!) by GIA.
The screen shot of the ppt shows the very heavily included rough in the lower left. The main slide shows all the planned stones with the 30ct Fancy yellow at the top with 10ct down to 90 point stones at the bottom. This is what I mean by 'complex rough'. Each has a value estimate from a 'list' based on predicted carat, color and clarity. Of course they can also see the estimated ideal-scope and ASET images before the stones are polished.

 

[diagem]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Here is a take that the Cut Group (Serg, Yuri, Janak Mistry and myself) proposed in 2009 and continue to develop appropriate technologies to enable cutters to list various cut options from the same piece of rough, and as Paul notes, turn the investment faster.
There is an entire 6 page article that I have asked Andrey and Erika to review and post in Articles> Diamond News.

but here is a screen shot of part that is relevant to discussions here:

A few interesting questions for you on this subject Garry.
Since 2009..., why is it not rolling?
What is keeping this project from taking off?
And you mention twice price adjusting according to an open "price-list", what price list are you aiming to? And if we can get a glimpse at that price list structure and how it's build?

Hi Yoram,
Firstly this was a presentation that we planned for our second International Diamond Cut Conference, and we cancelled that event because of the financial crisis.

Secondly, in order to expedite the proposal we would require a financial backer(s) - for example there is a lot of logistics involved, and that is not our business.

Thirdly, there is a lot of technology and equipment and patents required. Many of these are works in progress. Some are completed. ViBox is a key initial tool to enable a consistent cut based stereo (3D) movie making capacity for existing diamonds. Inclusion plotting, photographing and virtual modelling of inclusions https://www.google.com/patents/US86...a=X&ei=VU2_U46hCMjd8AWI7YKoBg&ved=0CBwQ6AEwAA (which has never been done before).

An open list could be Rap

I now remember something vaguely on this...
ViBox is an interesting tool, we spoke about it and I even contemplated purchasing one, I remember you told me its marketing is limited.

Regarding price lists..., Rap is a problem, I think it's becoming irrelevant as we move into the future and more speciality (fancy) cut are being offered. How do you calculate a 0.99 vs. a 1.00 ct (or any other milestone size jumps), the Rap price discrepancies are too big vs market realities. That's why I asked...

 

[Garry H (Cut Nut)]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Regarding price lists..., Rap is a problem, I think it's becoming irrelevant as we move into the future and more speciality (fancy) cut are being offered. How do you calculate a 0.99 vs. a 1.00 ct (or any other milestone size jumps), the Rap price discrepancies are too big vs market realities. That's why I asked...

I think that's a whole different topic Yoram. But we manage to work it out

 

[diagem]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Here is a take that the Cut Group (Serg, Yuri, Janak Mistry and myself) proposed in 2009 and continue to develop appropriate technologies to enable cutters to list various cut options from the same piece of rough, and as Paul notes, turn the investment faster.
There is an entire 6 page article that I have asked Andrey and Erika to review and post in Articles> Diamond News.

but here is a screen shot of part that is relevant to discussions here:

A few interesting questions for you on this subject Garry.
Since 2009..., why is it not rolling?
What is keeping this project from taking off?
And you mention twice price adjusting according to an open "price-list", what price list are you aiming to? And if we can get a glimpse at that price list structure and how it's build?

it is just concept to change diamond industry with 3 Goals:
1) Retain profit for manufactures
2) Increase consumer confidence
3) Compete with other Luxury markets

there are many technical problems to do it in real life right now.
see short list below:
a) Cheap Technology to predict Color, Clarity , Mass, Beauty with high accuracy. mass is not problem, but to predict Color , Clarity in 2009 you have polish many windows in rough stage and do many expensive and time consuming measurements( technically it is possible but it is profitable only for above 5-10 carat VS rough)

Today you can have Galaxy (Sarin) predict clarity without windowing, I believe you at Octonus are offering a similar service? That should help bring smaller polished into the economic sense?

b) in rough Stage delivery to Consumer exact Visual information about Beauty, Clarity, Color future polished diamonds.
for big diamonds and few consumers per day it is possible but there are not system yet for thousand transaction between consumer and rough yet. and again it is too expensive yet even for 1ct polished diamond.

Exact? How precisely? And beauty? How do you deliver info on beauty?

c) at least 5 big manufactures have to freeze 10% annual rough stock in semipolish stage . huge investments when industry has problem with cash flow ( in same time manufactures froze 50%-100% annual production in polished diamonds. it is reason why they have not money now )
e) Jeweller network with standard consumer light conditions and well educated staff.( it is most problematic task and huge investments)

I fully agree with you education especially at the retail level is crucial for any advancement. The problem I see there is no school for education at the level we are speaking of, it's not a matter of investment as it is a matter of time. And we haven't even begun yet.

d) Library of High Performance Fancy cut designs

Library of high performance Fancy cuts is limited due to only a small number of manufacturers even understand the language we speak, again it's a matter of time and education.
I have been trying to relay some of the cutting processes we go through on some of our 3D precision fancy cut products and you might be surprised to hear I have yet to meet one cutter who actualy knew what ASET is let alone other reflector tech. Cutters don't even understand the meaning of light performance. They get a set of numbers to keep in between to achieve 3X RB's and that's it.

Sergey, I think we are light years away from the day a higher percentage of cutters who will have the potential to understand 3D precision cuts and the optical properties they can potentially offer.
One of the reasons I decided to record a process of our 3D cutting capabilities and hopefully one day offer this as an educational on our soon to come website..., if I can even get to complete.

 

[diagem]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Regarding price lists..., Rap is a problem, I think it's becoming irrelevant as we move into the future and more speciality (fancy) cut are being offered. How do you calculate a 0.99 vs. a 1.00 ct (or any other milestone size jumps), the Rap price discrepancies are too big vs market realities. That's why I asked...

I think that's a whole different topic Yoram. But we manage to work it out

Garry, I don't think it's a different topic as we are brainstorming an efficient way to price these so-called rough to polished journeys.
There is no way in today's rough market realities we can reflect the jumps Rap proposes on his list. It's not possible to sell a 0.99 at 30% below a 1.00ct (just as one of many examples). And when you cut to the super 3D fancy cut precision we are talking about, the price jumps must be mild as we can't realy cheat our way into the higher weight brackets as most generics cuts can.

We are shooting ourselves in the foot when we price polished based on the market bad habits...

 

[Paul-Antwerp]

Re: Brainstorm:A consumer commissioning a cut diamond from r

I really do not see the problem.

As a cutter, you have a piece of rough and an expectation of what will come out. On that basis, you have made the decision to buy the rough. On that same basis, you can give a final price to the consumer for the final stone.


Live long,

The only difference is cutters needs to individually price a rough Diamond when it comes out of a larger rough lot of a plurality of sizes, qualities & shapes.
Then the cost is based on your range of estimation which is again a different calculation of the expected ranges.

Yoram,

We are not in disagreement, but I still do not see the problem. The cost of your parcel of rough is immaterial. When you are truly working it, you have already spent the money and now, you have to make the best of it. Making the best of a parcel is done by making the best out of every individual stone.

Then, you can weigh your options. You can sell it now as the G-VS2 you expect. Or you can wait, hoping that it will come out F-VS2, hoping that you can sell that one quickly after that.

Live long,

 

[Serg]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Yoram,

re:Today you can have Galaxy (Sarin) predict clarity without windowing, I believe you at Octonus are offering a similar service? That should help bring smaller polished into the economic sense?

Neither Galaxy nor Octonus IG technology gives enough information about inclusions for precise clarity grade.

just simplest example. Take "watery " crack ( semi transparent) . If you open window we take image in normal light condition , build texture and model photoreal image for polished diamond with such "watery crack".

if you use Galaxy then all cracks nontransparent and very thick .
so for most SI-I polished diamonds you can not give correct clarity forecast if you use Immersion technology.
IF-VVS is again problem for Galaxy.
Octonus Mbox IG may manage IF-VVS, but it is just coming and productivity is just 3-5 pieces per day for 10 carat rough( may be 10 pieces for 2 ct). Cutters depend 50-100 pieces per day for one working place.
5 pieces for 10ct rough is fine, but 10 pieces for 2ct is to small productivity yet.( so , it is expensive)
and you have to open rough ( 3 pair parallel windows) to take absorption spectrum is you need predict color with high accuracy .( for any fancy cut). it is again expensive and reasonable only for 5+ct rough.

 

[Serg]

Re: Brainstorm:A consumer commissioning a cut diamond from r

re:Exact? How precisely? And beauty? How do you deliver info on beauty?

to show Beauty on line we use stereo movies.

 

[Karl_K]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Regarding price lists..., Rap is a problem, I think it's becoming irrelevant as we move into the future and more speciality (fancy) cut are being offered. How do you calculate a 0.99 vs. a 1.00 ct (or any other milestone size jumps), the Rap price discrepancies are too big vs market realities. That's why I asked...

I think that's a whole different topic Yoram. But we manage to work it out

Garry, I don't think it's a different topic as we are brainstorming an efficient way to price these so-called rough to polished journeys.
There is no way in today's rough market realities we can reflect the jumps Rap proposes on his list. It's not possible to sell a 0.99 at 30% below a 1.00ct (just as one of many examples). And when you cut to the super 3D fancy cut precision we are talking about, the price jumps must be mild as we can't realy cheat our way into the higher weight brackets as most generics cuts can.

We are shooting ourselves in the foot when we price polished based on the market bad habits...

I think the only work around for that problem is not offer rough that will cut close to the big jump weight.
For example 2.15 to 2.20 expected with a 2ct min. is fine but no 2.00 to 2.05 expected should be offered.

 

[Serg]

Re: Brainstorm:A consumer commissioning a cut diamond from r

I really do not see the problem.

As a cutter, you have a piece of rough and an expectation of what will come out. On that basis, you have made the decision to buy the rough. On that same basis, you can give a final price to the consumer for the final stone.


Live long,

The only difference is cutters needs to individually price a rough Diamond when it comes out of a larger rough lot of a plurality of sizes, qualities & shapes.
Then the cost is based on your range of estimation which is again a different calculation of the expected ranges.

Yoram,

We are not in disagreement, but I still do not see the problem. The cost of your parcel of rough is immaterial. When you are truly working it, you have already spent the money and now, you have to make the best of it. Making the best of a parcel is done by making the best out of every individual stone.

Then, you can weigh your options. You can sell it now as the G-VS2 you expect. Or you can wait, hoping that it will come out F-VS2, hoping that you can sell that one quickly after that.

Live long,

some diamonds after grading receive upgrade( from cutter expectations ) , other downgrade .
suppose :
1) 10% diamonds received downgrade 1 grade for color and 1 grade for clarity, 20% received downgrade either 1 grade for color or 1 grade for clarity, 10% diamonds received upgrade 1 grade for color and 1 grade for clarity, 20% received upgrade either 1 grade for color or 1 grade for clarity , 40% same grade

2) total average margin 10-15% from parcel( according Lab grade or cutter expectations ) , expenses 7% ( so profit from parcel 3-8%).

if cutter sell all downgraded diamond according lab grade( less then them expectations) and all upgraded diamonds according him expectation , then he receive negative profit from same parcel instead profit 3-8%.

 

[pyramid]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Couldn't believe I had found such a good thread to read this morning. This is great news, hope other consumers are reading this and enjoying it too.

 

[diagem]

Re: Brainstorm:A consumer commissioning a cut diamond from r

I really do not see the problem.

As a cutter, you have a piece of rough and an expectation of what will come out. On that basis, you have made the decision to buy the rough. On that same basis, you can give a final price to the consumer for the final stone.


Live long,

The only difference is cutters needs to individually price a rough Diamond when it comes out of a larger rough lot of a plurality of sizes, qualities & shapes.
Then the cost is based on your range of estimation which is again a different calculation of the expected ranges.

Yoram,

We are not in disagreement, but I still do not see the problem. The cost of your parcel of rough is immaterial. When you are truly working it, you have already spent the money and now, you have to make the best of it. Making the best of a parcel is done by making the best out of every individual stone.

Then, you can weigh your options. You can sell it now as the G-VS2 you expect. Or you can wait, hoping that it will come out F-VS2, hoping that you can sell that one quickly after that.

Live long,

Paul, ofcourse we are not in disagreement but still if it was that simple we wouldn't be talking about it.
When you have multiple fancy cuts on offer it becomes a bit more complicated, less alone if we are talking about complicated geometric fancy cuts.
When producing rounds it does make it a bit easier I would agree..., even though, I still don't see how a cutter can guarantee and/or estimate rough outcome at 1 range +/-. Too many factors to take into consideration especially within the commercial ranges of HIJ-VS-SI.

 

[diagem]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Yoram,

re:Today you can have Galaxy (Sarin) predict clarity without windowing, I believe you at Octonus are offering a similar service? That should help bring smaller polished into the economic sense?

Neither Galaxy nor Octonus IG technology gives enough information about inclusions for precise clarity grade.

just simplest example. Take "watery " crack ( semi transparent) . If you open window we take image in normal light condition , build texture and model photoreal image for polished diamond with such "watery crack".

if you use Galaxy then all cracks nontransparent and very thick .
so for most SI-I polished diamonds you can not give correct clarity forecast if you use Immersion technology.
IF-VVS is again problem for Galaxy.
Octonus Mbox IG may manage IF-VVS, but it is just coming and productivity is just 3-5 pieces per day for 10 carat rough( may be 10 pieces for 2 ct). Cutters depend 50-100 pieces per day for one working place.
5 pieces for 10ct rough is fine, but 10 pieces for 2ct is to small productivity yet.( so , it is expensive)
and you have to open rough ( 3 pair parallel windows) to take absorption spectrum is you need predict color with high accuracy .( for any fancy cut). it is again expensive and reasonable only for 5+ct rough.

Thank you for this explanation Sergey..., now I better understand why I have not utilized this technology for my needs. I tried a few tries a couple of years ago on the Galatea but it just gave me a headache! Too many turn on/off inclusion options for me.

When you say watery cracks do you mean those cracks we usualy find in the Canadian rough where its almost impossible to estimate the depts of the feathers which usualy follow?

 

[Karl_K]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Janak has given permission to post this example. There is a PDF that I can send to interested parties by email also.
This 148ct rough was estimated to yield +15 Ct J IF + a few other smaller polish by its owner.
https://www.dropbox.com/s/ddku4vl3a46jbpl/SG_148_Rough Diamond.mov

The movie for the polish of 30.28 Ct SI1 Fancy Yellow can be found at: https://www.dropbox.com/s/t6eae8zgz...9_1.4X_WBG_6D_GRAYCOAT_CHROMA+15_CCP_HIGH.mp4

You can see in the movie that the stone is almost colorless from the side view. It has been graded as Fancy Yellow (Not Fancy Light!!) by GIA.
The screen shot of the ppt shows the very heavily included rough in the lower left. The main slide shows all the planned stones with the 30ct Fancy yellow at the top with 10ct down to 90 point stones at the bottom. This is what I mean by 'complex rough'. Each has a value estimate from a 'list' based on predicted carat, color and clarity. Of course they can also see the estimated ideal-scope and ASET images before the stones are polished.

Garry can you show the diagram where the wire outline of the cut stone is shown in the rough.
I am curious and others might be interested also.

 

[Serg]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Yoram,

re:Today you can have Galaxy (Sarin) predict clarity without windowing, I believe you at Octonus are offering a similar service? That should help bring smaller polished into the economic sense?

Neither Galaxy nor Octonus IG technology gives enough information about inclusions for precise clarity grade.

just simplest example. Take "watery " crack ( semi transparent) . If you open window we take image in normal light condition , build texture and model photoreal image for polished diamond with such "watery crack".

if you use Galaxy then all cracks nontransparent and very thick .
so for most SI-I polished diamonds you can not give correct clarity forecast if you use Immersion technology.
IF-VVS is again problem for Galaxy.
Octonus Mbox IG may manage IF-VVS, but it is just coming and productivity is just 3-5 pieces per day for 10 carat rough( may be 10 pieces for 2 ct). Cutters depend 50-100 pieces per day for one working place.
5 pieces for 10ct rough is fine, but 10 pieces for 2ct is to small productivity yet.( so , it is expensive)
and you have to open rough ( 3 pair parallel windows) to take absorption spectrum is you need predict color with high accuracy .( for any fancy cut). it is again expensive and reasonable only for 5+ct rough.

Thank you for this explanation Sergey..., now I better understand why I have not utilized this technology for my needs. I tried a few tries a couple of years ago on the Galatea but it just gave me a headache! Too many turn on/off inclusion options for me.

When you say watery cracks do you mean those cracks we usualy find in the Canadian rough where its almost impossible to estimate the depts of the feathers which usualy follow?

see sample..

whole Mbox IG movie

https://www.dropbox.com/s/z3cvh30rnx96qe3/2014-06-25, 18-32-28-side_by_side_video.mp4

better to see this movie on Stereo monitor. In mono it is not very interesting.

 

[kenny]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Serg, sorry for the threadjack but this is incredible.

I think you need to sell that diamond to someone with an aquarium. AND DON'T CUT OFF THAT INCLUSION!
One inclusion looks like Brine Shrimp, a live food we feed our tropical fish.

The resemblance is uncanny.
I don't think it's possible for a living thing to get preserved in a diamond, but this reminds me of those real bugs that got caught in amber.

 

[Serg]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Serg, sorry for the threadjack but this is incredible.

I think you need to sell that diamond to someone with an aquarium. AND DON'T CUT OFF THAT INCLUSION!
One inclusion looks like Brine Shrimp, a live food we feed our tropical fish.

The resemblance is uncanny.
I don't think it's possible but this is like those real bugs that got caught in amber.

Kenny,
all 3 images are from same inclusion ( just different observer directions)

 

[diagem]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Yoram,

re:Today you can have Galaxy (Sarin) predict clarity without windowing, I believe you at Octonus are offering a similar service? That should help bring smaller polished into the economic sense?

Neither Galaxy nor Octonus IG technology gives enough information about inclusions for precise clarity grade.

just simplest example. Take "watery " crack ( semi transparent) . If you open window we take image in normal light condition , build texture and model photoreal image for polished diamond with such "watery crack".

if you use Galaxy then all cracks nontransparent and very thick .
so for most SI-I polished diamonds you can not give correct clarity forecast if you use Immersion technology.
IF-VVS is again problem for Galaxy.
Octonus Mbox IG may manage IF-VVS, but it is just coming and productivity is just 3-5 pieces per day for 10 carat rough( may be 10 pieces for 2 ct). Cutters depend 50-100 pieces per day for one working place.
5 pieces for 10ct rough is fine, but 10 pieces for 2ct is to small productivity yet.( so , it is expensive)
and you have to open rough ( 3 pair parallel windows) to take absorption spectrum is you need predict color with high accuracy .( for any fancy cut). it is again expensive and reasonable only for 5+ct rough.

Thank you for this explanation Sergey..., now I better understand why I have not utilized this technology for my needs. I tried a few tries a couple of years ago on the Galatea but it just gave me a headache! Too many turn on/off inclusion options for me.

When you say watery cracks do you mean those cracks we usualy find in the Canadian rough where its almost impossible to estimate the depts of the feathers which usualy follow?

see sample..

whole Mbox IG movie

https://www.dropbox.com/s/z3cvh30rnx96qe3/2014-06-25, 18-32-28-side_by_side_video.mp4

better to see this movie on Stereo monitor. In mono it is not very interesting.

Interesting image of the feather Sergey, but do you think it shows the genuine end of the feather depth? Even if they are thin as two natural plane divisions? This feather in your image is in the thickness of a plurality of planes.

 

[Karl_K]

Re: Brainstorm:A consumer commissioning a cut diamond from r

The way I see it there are 3 main options for pricing with some room for modification at each level:
In all 3 the client pays nothing if it blows on the wheel.
1: open ended, the price is based on the lab grades and weight with no cap.
...A: Not knowing what it is going to cost is a huge barrier to placing an order.
.
2: capped price, the price is based on the lab grades and weight with a max price.
...A: take a risk of people always expecting a stellar deal if many of them come over the expected max price in value. One doesn’t and the buyer feels cheated even if they got a fair deal.
.
3: one set price, no matter the lab grades and weight
....A: that is a lot of risk to expect a customer to take on. Same risk as 2 above also.

My thoughts:
1: I don’t think this is possible. I would not order one under those conditions.
2: likely the most fair option but not without risk.
3: I am not comfortable handling that much risk on to the customer.
What are your thoughts?

 

[Garry H (Cut Nut)]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Janak has given permission to post this example. There is a PDF that I can send to interested parties by email also.
This 148ct rough was estimated to yield +15 Ct J IF + a few other smaller polish by its owner.
https://www.dropbox.com/s/ddku4vl3a46jbpl/SG_148_Rough Diamond.mov

The movie for the polish of 30.28 Ct SI1 Fancy Yellow can be found at: https://www.dropbox.com/s/t6eae8zgz...9_1.4X_WBG_6D_GRAYCOAT_CHROMA+15_CCP_HIGH.mp4

You can see in the movie that the stone is almost colorless from the side view. It has been graded as Fancy Yellow (Not Fancy Light!!) by GIA.
The screen shot of the ppt shows the very heavily included rough in the lower left. The main slide shows all the planned stones with the 30ct Fancy yellow at the top with 10ct down to 90 point stones at the bottom. This is what I mean by 'complex rough'. Each has a value estimate from a 'list' based on predicted carat, color and clarity. Of course they can also see the estimated ideal-scope and ASET images before the stones are polished.

Garry can you show the diagram where the wire outline of the cut stone is shown in the rough.
I am curious and others might be interested also.

There is a nic complex one here Karl http://www.wmagazine.com/fashion/accessories/2008/03/graff_diamonds/

 

[kenny]

Re: Brainstorm:A consumer commissioning a cut diamond from r

Cool article.
Thanks for posting, Garry.

Because it is apropos for PS as we wait anxiously for Yoram's next pics, "... it’s ultimately the human hand, the artisan, who makes the diamond. Things can go very wrong.” So much so that one of the industry’s unwritten laws is never to brag about a stone to the world at large until it’s finished."

I think we were lucky to see the rough, especially with a few viewing windows polished onto it.