Diamond Patent Application: High Yield Diamond

[pricescope]

United States Patent Application: 20030188551

High Yield Diamond

Patenting in diamond cutting is flourishing in the last few years. Many companies including Tiffany and Hearts on Fire try to patent their exclusive designs.

This particular application is interesting because it claims improving yield by adding extra pavilion facets and therefore make the stone heavier (more expensive?). Good example when extra facets not equal to better looking diamond.

I like their Description of the Prior Art, however, and especially this paragraph

[0013] Today's diamond consumer is typically a highly discriminating and well educated shopper, looking for the highest value out of his or her investment. At the same time, the diamond supplier wants to obtain the highest yield from a given piece of rough. Currently, 10%-50% retention is good for a brilliant cut diamond. Since the price per carat increases exponentially in proportion to the carat weight of a particular stone, it is highly desirable to increase the yield, and conversely decrease the waste, from a given rough. The same light and dispersion can be obtained at less cost through weight retention during the faceting process.

 

[Garry H (Cut Nut)]

this is a normal round brilliant to approx the proportions of the picture Leonid posted.

leakage = .11 and light return = .64

Lowest scores i have ever calculated on DiamCalc!

Anyone good with GemCad who can make us more accurate a model we can import into DiamCalc?

 

[spicolicpa]

Is cut nut a deleted user? What does that mean? It wont show now but before it said "last reply by deleted user"

 

[Garry H (Cut Nut)]

Probably a typo - should be 'demented'

 

[Mara]

Wow interesting diagrams Leo. That is one incredibly deep diamond!!!




That DiamCalc image is very beautiful in a red and white sort of way. A round brilliant cut like that seemingly wouldn't even look like a round brilliant..what would it look like? A pretty leaky flower?

 

[pricescope]

Garry, it is just a diagram. However, one can try to add extra layer of facets into ideal cut round.

 

[mikko]

Hi everyone. I´ve been lurking here almost a year so it´s finally time to post something

Fig.9 and fig.10 are not the same stone. One can easily see that when comparing lower pavilion facet sizes. Here is best simulation i can create with gemcad & gemcalc. It´s seems that there really is possiblity to "invent" quite decent deep cuts, but who really needs this hidden weight?

It would be nice to see this patent approved. I feel safe when i know in the future there can be only one source for sapphirelike diamond cuts

Light return .98 (Very Good)
Leakage .75 (Good)
Contrast 1.25 (Excellent)
Fish eye 1.0 (Very Good)

 

[pricescope]

Tervetuloa Mikko.

This is one great simulation! I see you've been practicing with DiamCalc for quite a wile

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... but who really needs this hidden weight?
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I think you know the answer

Btw, as far as minä muistaan Suomen kieli, you site is very nice

 

[Serg]

Re:
"
Fig.9 and fig.10 are not the same stone. One can easily see that when comparing lower pavilion facet sizes. Here is best simulation i can create with gemcad & gemcalc. It´s seems that there really is possiblity to 'invent' quite decent deep cuts, but who really needs this hidden weight? "

Hi, Mikko

Well done.

Did you mean gemcad&gemcalc&gemadviser or gemcad&diamcalc ?

 

[Serg]

Mikko,
Could you post IS gemcalc image for incline position?

 

[Iiro]

Moi Mikko!

Looks like the new cut has some benefits. Little fine tuning and it will beat the Ideal cut

Awesome work with GemCad and GemCalc!

 

[valeria101]

Hi!

Welcome to Pricescope! There is one question I kept in storage for far too long now, waiting for a true Finnish answer: what is (has been) happening with the diamond deposits in Finaland? There are not too many of those in good-old-Europe, you know... will we ever have nicely labeled Fin Diamonds like the Canadians do? I will be spending winter in Finland...by the way

.

 

[Serg]

----------------
On 11/15/2003 10:29:30 AM valeria101 wrote:

........ "The greatest experts are only as good as the sum total of what they have seen." [Souren Melikian]

.
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He lives in the cave, but his intellectual power let him infer the existence of an ocean from the existence of water drop.
Approximate quotation from "The Waves Still the Wind" novel of Strugatskie brothers.

 

[Rank Amateur]

In the end wouldn't it be priced like other similar-yield fancy shapes and not like a RB ideal?

 

[Garry H (Cut Nut)]

Welcome Mikko

I would love to have that DiamCalc file to play with.
If you would be so generous

[email protected]

 

[mikko]

Garry, i hope you received mail

I ment gemcad&gemcalc&gemadviser. Does it give different results for light return & leakage?


We have a small diamond company A&G Mining in Kaavi, northern Karelia district. I visited the mine last june. They are developing kimberilite consentration methods together with a large mini ngcompany Outokumpu, and only couple of sample runs have been made so far. Diamonds are relatively small.

They have no english pages, but nice pic from the pipe before opening:

http://www.timantti.info

 

[Garry H (Cut Nut)]

Sorry Mikko - I recieved nothing yet?

[email protected] or [email protected]

Thanks for the mine pic's

 

[Garry H (Cut Nut)]

Thanks Mikko.

You are right Sergey - there is a large amount of leakage when the stone is tilted slightly (as seen from each eye).

But the light return is still good when tilted.

 

[mike04456]

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On 11/14/2003 3:21:37 PM leonid wrote:










Patenting in diamond cutting is flourishing in the last few years. Many companies including Tiffany and Hearts on Fire try to patent their exclusive designs.

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"Many" is an understatement. The USPTO has issued about 200 cut patents since 2000. I would say somewhat less than half have been put on the market.

Most of those cuts will go nowhere--there isn't enough room in the jewelry market for 200 different diamond brands. IMO, this one is dead on arrival. Even the diagrams are ugly--I can't imagine what the stone must look like.

 

[Mara]

Would this stone have a dark table? Visually be more like a 'shallow' RB?




Welcome Mikko...wow..lurking for a year--that's a very long time to be silent!

 

[Andreyy]

Dear Mikko,

You can get free conversion from GemCalc to DiamCalc. We hope that this will make your investigations more easy and you will have more time to publish your conclusions in forum.
Please contact to me by e-mail [email protected].

Andrey Aleshin,
OctoNus

 

[mikko]

Thank you, Andrey

I promise it will give hard time to MyComputer's processor