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 What is the problem with crystals in Sapphire and Ruby?
P:  8/17/2004 9:30:37 PM  
Pyramid
Pyramid

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Total Posts: 2,914
Last Post: 11/11/2009
Member Since: 11/10/2002
 
 		In a previous post Garry Holloway (Cut Nut) mentioned the problem with crystals in Sapphire and Ruby? What is the problem? I now that sapphires are heated for colour improvement.

 
Posted:  8/17/2004 9:30:37 PM

 There are 2 replies to this message.  There are 2 replies on this page.
P: 8/18/2004 6:24:13 AM
Pyramid
Pyramid

Ideal Rock
Total Posts: 2,914
Last Post: 11/11/2009
Member Since: 11/10/2002
 
 		I take it the problem is with heat treating sapphires and rubies as I have found in this article.

This should be in the colored stones section I now realise however it also states that jewellers can have problems with natural unheated sapphires as when repairs are being carried out on jewellery a crystal may expand and cause damage since it has never been heated before. It states that the heat treated sapphires which explode during the heat treat process to improve color would be recut or discarded at the time of the process.

Mmm, maybe we should buy heat treated after all. I don't know though about high quality sapphires maybe they are chosen with no crystals in them to begin with.


http://www.ganoksin.com/borisat/nenam/ajm-corundum.htm

Posted:  8/18/2004 6:24:13 AM
P: 8/18/2004 6:28:08 AM
Garry H (Cut Nut)
Garry H (Cut Nut)

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Last Post: 11/24/2009
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 		If you heat a diamond with a crystal nothing bad happens like it would with most corundum's with xstals.

Re read the previous thread Pyramid

Garry Holloway FGAA DipDT

HCA and Ideal-scope developer

http://www.ideal-scope.com and
http://www.HollowayDiamonds.com.au

Posted:  8/18/2004 6:28:08 AM

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