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 Post subject: Is a spectroscope able to determinate rough diamond's color?
PostPosted: Sat Jun 09, 2012 6:02 am 
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I was just wondering if by using a spectroscope, one can determinate
what would be the color of a rough diamond before polished.

Of course I am speaking of diamonds with an overburden.

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 Post subject: Re: Is a spectroscope able to determinate rough diamond's co
PostPosted: Sat Jun 09, 2012 2:10 pm 
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spectroscope is used for diamond rough to determine the stress and strain so cutter will be careful in cutting procedure, thats all! determining the color by spectroscope is impossible.
i guess you can find out the usage of spectroscope in The Gemology Project

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 Post subject: Re: Is a spectroscope able to determinate rough diamond's co
PostPosted: Sat Jun 09, 2012 2:13 pm 
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Thank you for your reply.

The thing is that I know there is a tool that allows you to analyze rough diamonds
and determinate the color the polished diamond will have.

Maybe it is a spectograph not a spectroscope?


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 Post subject: Re: Is a spectroscope able to determinate rough diamond's co
PostPosted: Sat Jun 09, 2012 3:25 pm 
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well from most of the manufacturer i know they can judge the color of the rough by opening a window, sometime if the rough is glassy they can determine without window.

ZVI YEHUDA Colorimeter is an instrument to grade rough color
http://www.ogisystems.com/retaileds/colorimeter.html

there are cut Advisor for cutting rough creating 3D models and plannings also rough marking.
read more about these instruments here:
http://www.octonus.com/oct/products/helium/rough/
http://www.ogisystems.com/manufactures/scanox-i500.html
there are many products from ogisystems for rough and manufacturers

as for the instrument to determine the color of polished (not rough) diamond there are Sarin Colorimeter and Sarin’s Colibri:
http://www.sarin.com/colibri.asp
http://www.sarin.com/colorimeter.asp

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 Post subject: Re: Is a spectroscope able to determinate rough diamond's co
PostPosted: Thu Jun 28, 2012 3:30 pm 
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Hi,

Small correction, one uses a polariscope to see the strain or tension in a rough stone, not a spectroscope;

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 Post subject: Re: Is a spectroscope able to determinate rough diamond's co
PostPosted: Thu Jun 28, 2012 6:18 pm 
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Thanks to my insatiable curiosity and Google, voila! Such machines apparently exist.

http://www.ogisystems.com/retaileds/colorimeter.html

I have no idea if this thing really works as described. I'll leave that to the diamond experts here. I have a difficult enough time determining top colors in cut diamonds! :lol:

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 Post subject: Re: Is a spectroscope able to determinate rough diamond's co
PostPosted: Thu Jun 28, 2012 6:48 pm 
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That's cool, Rick. One of those gadgets that i'd like to play with if it weren't so expensive.

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 Post subject: Re: Is a spectroscope able to determinate rough diamond's co
PostPosted: Fri Jun 29, 2012 1:31 am 
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eh ROM i already post that link two post above :|

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 Post subject: Re: Is a spectroscope able to determinate rough diamond's co
PostPosted: Fri Jun 29, 2012 9:56 am 
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Apologies, Rosh. I was so busy with the hunt I overlooked your link. :oops:

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 Post subject: Re: Is a spectroscope able to determinate rough diamond's co
PostPosted: Fri Jun 29, 2012 1:26 pm 
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ROM wrote:
Apologies, Rosh. I was so busy with the hunt I overlooked your link. :oops:

no hard filling mate :wink:

although colorimeter is for rough i wonder if it works with polished too, specially that it can detect type IIB / IIA diamonds & coated ones!
also fancy yellow even brown tint in the D-F color range! as it claim!!!

seems to be all-in-one instrument

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