25ct wrote:
> 
>      Hi Thomas,
> 
>                        a brilliant-cut diamond has 58 facets including the
> 'table', the top. I believe that they are arranged in  30/60 degree angles.
> 

I will let you count the facets, but the classical angles are about 43, 44 and
45 degrees (at least in my books). You may have to adjust the 43/44 according
to the IOR (not for diamond, but zyrcon may have a different angle...)

I made a brilliant-cut some time ago; have a look at 
 http://www.citeweb.net/grimbert/pov/objet.html

Now, if you find the gem-cutting manual for other cut, 
you're very welcome to share.


> 
> "Thomas Lake" <tla### [at] homecom> wrote in message
> news:399BB93B.1E684D2D@home.com...
> > I have been thinking of getting back into hand coding a bit, haven't
> > done any in......forever almost. I'd also like to learn to use macros.
> > So I think I might combine the 2 and make my own Diamond image. I have
> > some neat ideas involving a lot of facets and glass....see you in a few
> > years. Can anyone give me any accurate information on diamond cutting?
> > For example some popular diamond cuts, how many facets etc..
> >
> > --
> > Come visit my web site:-) : http://www.geocities.com/~thomaslake/
> >
> >

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