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 Post subject: cubic boron nitride c-BN (artificial compound)
PostPosted: Wed Jan 19, 2011 7:16 pm 
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Joined: Sun Jun 28, 2009 9:56 am
Posts: 1246
I was wondering if anyone is producing transparent cubic boron nitride crystals with some real size to speak of? (maybe for industrial or science applications)

If so, diamond people beware, because it sounds like it could be a perfect candidate for a diamond substitute (it's isotropic, hardness is about 9.9, density is about 3.5, RI about 2.1, with high thermal conductivity).

pics:

http://www.indus-global.com/IMAGES/Prod ... -123AB.jpg

http://i01.i.aliimg.com/photo/v0/108335 ... itride.jpg


All these new crystalline compounds that are being synthetized these days (many of which gemologists do not feel concerned about) are making me worried because some might fall pretty close to the physical and optical characteristics of existing natural stones.


Last edited by cascaillou on Sat Nov 12, 2011 9:29 am, edited 2 times in total.

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 Post subject: Re: cubic boron nitride c-BN (artificial compound)
PostPosted: Thu Jan 20, 2011 4:23 am 
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Joined: Fri May 12, 2006 11:24 am
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Location: Rome, Italy
hi,

this material is not so recent, guess why there's no alert around about that..... maybe, despite it's physical characteristics, it's not suitable as a diamond simulant.... :roll:
ciao
alberto

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 Post subject: Re: cubic boron nitride c-BN (artificial compound)
PostPosted: Wed Jul 06, 2011 2:48 pm 
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Joined: Mon Mar 19, 2007 2:24 pm
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If they get bigger, they'll be even prettier than they are now. I'd buy one :)

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Looking at, learning about, "investing" in, aesthetically pleasing minerals, sometimes even when I should be working. I'm an intellectual property attorney- patents, copyright, trade secrets ... drop me a line if I can help you out.


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