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Peter Trei
medicine forum beginner
Joined: 26 Jun 2006
Posts: 2
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 Posted: Wed Jun 28, 2006 7:43 pm Post subject:
Re: Diamonds can now be made in laboratories by Scientists???
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Erik Max Francis wrote:
| Quote: | Peter Trei wrote:
It's my suspicion that when the patents run out, around
15-20 years from now, the price of diamonds will finally
fall to a realistic level, and deBeers will pack up shop.
I kind of doubt it. A lot of people who want diamonds for jewelry want
them because they're expensive, not because they're just diamonds. All
De Beers has to do is keep pumping the idea that their diamonds are what
the consumers want and artificial diamonds are fake, regardless of
whether they're indistinguishable. De Beers already has methods of
tracking the authenticity of their diamonds, so whether you can't tell
them apart is really irrelevant in that respect.
Diamonds for industrial purposes is another thing, but there already De
Beers doesn't have a lock on that market.
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The Wikipedia article on "Synthetic Diamond" is informative.
You might want to look at Apollo Diamond
http://www.apollodiamond.com/ who say they will start
selling synthetic colorless diamonds this year.
Gemesis http://www.gemesis.com/home.htm is specializing on
colored diamonds, which actually command a higher price than
mined ones.
The current "custom" of diamond engagement rings actually only
dates back to an advertising campaign by deBeers in the 1940s.
When its possible to buy synthetic diamond jewelry for a
fraction of the current price, and the stones are
distinguishable from mined stones by (a) their lack of
flaws, (b) or by using lab equipment, deBeers is going to
have a real problem on its hands. Most people simply won't
care.
Peter Trei |
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acemanvx@yahoo.com
medicine forum Guru
Joined: 15 Nov 2005
Posts: 732
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| Posted: Fri Jun 30, 2006 9:04 pm Post subject:
Re: Diamonds can now be made in laboratories by Scientists???
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Peter Trei wrote:
| Quote: | Erik Max Francis wrote:
Peter Trei wrote:
It's my suspicion that when the patents run out, around
15-20 years from now, the price of diamonds will finally
fall to a realistic level, and deBeers will pack up shop.
I kind of doubt it. A lot of people who want diamonds for jewelry want
them because they're expensive, not because they're just diamonds. All
De Beers has to do is keep pumping the idea that their diamonds are what
the consumers want and artificial diamonds are fake, regardless of
whether they're indistinguishable. De Beers already has methods of
tracking the authenticity of their diamonds, so whether you can't tell
them apart is really irrelevant in that respect.
Diamonds for industrial purposes is another thing, but there already De
Beers doesn't have a lock on that market.
The Wikipedia article on "Synthetic Diamond" is informative.
You might want to look at Apollo Diamond
http://www.apollodiamond.com/ who say they will start
selling synthetic colorless diamonds this year.
Gemesis http://www.gemesis.com/home.htm is specializing on
colored diamonds, which actually command a higher price than
mined ones.
The current "custom" of diamond engagement rings actually only
dates back to an advertising campaign by deBeers in the 1940s.
When its possible to buy synthetic diamond jewelry for a
fraction of the current price, and the stones are
distinguishable from mined stones by (a) their lack of
flaws, (b) or by using lab equipment, deBeers is going to
have a real problem on its hands. Most people simply won't
care.
Peter Trei
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Hes right, many people insist on the real thing even when replicas look
identical to the nakid eye. It may be a while before technology can
make synthetic diamonds as perfect as the real thing where no one can
tell any difference. Still I wouldnt invest in diamonds now because
they wont be worth so much years from now. As for diamond lens glasses,
they would cost a fortune to make and probably will consist of hundreds
of tiny diamonds glued together. The chromatic and other aberrations
would make them impratical. They also would be impratical for anything
less than -15 diopters. We have 1.9 index glass(a far cry from 4.0
diamond) and I cant believe how thin those 1.9 glasses are! A -14 was
shown in those glasses and they are about half a centimeter thick or as
thick as standard index -5 glasses! I hear cermics with index as high
as 2.5 is in the works. This will mean super, super high pescriptions,
even -30 can have 2.5 index glasses less than a centimeter thick! No
more cokebottles, no more myodiscs(very poor field of vision) |
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John Savard
medicine forum beginner
Joined: 02 Jul 2006
Posts: 2
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| Posted: Sun Jul 02, 2006 7:19 am Post subject:
Re: Diamonds can now be made in laboratories by Scientists???
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On 27 Jun 2006 09:28:38 -0700, "Cliff Schuring"
<cliffschuring@hotmail.com> wrote, in part:
| Quote: | Diamond lense are already here about $1700 each and the
company Sixth Element is making them, wild quess who owns them. Thats
right the De Beers, here is a site with a PDF file talking about them.
By the way Intel also uses a lense version for IC analysis on the new
emmi instruments. Enjoy.
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I know one company bought some Russian technology, and was near being
able to commercially make inexpensive yellow diamonds.
Another company was a bit further off with chemical vapor deposition.
Did De Beers buy their technology?
Also, sapphire seems like a very good lens material, because it has not
only a high index, but low dispersion. Diamond has a high dispersion -
and isn't it birefringent too?
In any case, according to the latest issue of Scientific American, a
very thin coating of silver on a lens can produce, at least at a short
range, the ability for that lens, through a partial adoption of
characteristics of negative refraction, to focus light to make details
shorter than its wavelength.
Just the thing to keep Moore's Law going for a few more years!
Of course, there may still be uses for a diamond lens. A flint element
to go with a sapphire lens as the crown?
John Savard
http://www.quadibloc.com/index.html
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Repeating Rifle
medicine forum Guru Wannabe
Joined: 04 May 2005
Posts: 141
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| Posted: Sun Jul 02, 2006 9:24 pm Post subject:
Re: Diamonds can now be made in laboratories by Scientists???
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On 7/2/06 12:19 AM, in article 44a77263.25199926@news.usenetzone.com, "John
Savard" <seewebsite@excxn.aNOSPAMb.cdn.invalid> wrote:
| Quote: | Also, sapphire seems like a very good lens material, because it has not
only a high index, but low dispersion. Diamond has a high dispersion -
and isn't it birefringent too?
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Being a cubic crystal, diamond is not birefrinent.
Bill
-- Ferme le Bush |
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John Savard
medicine forum beginner
Joined: 02 Jul 2006
Posts: 2
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| Posted: Mon Jul 03, 2006 11:16 am Post subject:
Re: Diamonds can now be made in laboratories by Scientists???
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On Sun, 02 Jul 2006 21:24:02 GMT, Salmon Egg <salmonegg@sbcglobal.net>
wrote, in part:
| Quote: | Being a cubic crystal, diamond is not birefrinent.
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I found out that diamond was not birefringent from a website on diamond
simulants, but although I posted a correction, it didn't show up.
I'm surprised, though. Quartz has the same structure, yet it is
birefringent.
John Savard
http://www.quadibloc.com/index.html
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doctor_my_eye@msn.com
medicine forum Guru Wannabe
Joined: 24 May 2005
Posts: 150
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| Posted: Mon Jul 03, 2006 4:20 pm Post subject:
Re: Diamonds can now be made in laboratories by Scientists???
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The real novelty is in the use of carbon from dead relatives to make a
"wearable legacy" in the form of a diamond. So, if you just can't wait
to wear grandma on your ring finger or really remember your dog Spike,
look at this website:
http://www.lifegem.com/
studyandjobs@yahoo.com wrote:
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Repeating Rifle
medicine forum Guru Wannabe
Joined: 04 May 2005
Posts: 141
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| Posted: Mon Jul 03, 2006 6:00 pm Post subject:
Re: Diamonds can now be made in laboratories by Scientists???
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On 7/3/06 4:16 AM, in article 44a8fc41.358346@news.usenetzone.com, "John
Savard" <seewebsite@excxn.aNOSPAMb.cdn.invalid> wrote:
| Quote: | I'm surprised, though. Quartz has the same structure, yet it is
birefringent.
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More antiknowledge. Quartz is indeed birefringent but its crystal class is
trigonal, not cubic.
Bill
-- Ferme le Bush |
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Repeating Rifle
medicine forum Guru Wannabe
Joined: 04 May 2005
Posts: 141
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| Posted: Mon Jul 03, 2006 6:02 pm Post subject:
Re: Diamonds can now be made in laboratories by Scientists???
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On 7/3/06 9:20 AM, in article
1151943657.356864.164410@h44g2000cwa.googlegroups.com,
"doctor_my_eye@msn.com" <doctor_my_eye@msn.com> wrote:
Bill
-- Ferme le Bush |
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