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 Post subject: Sapphire: Have you the immersion reflex?
PostPosted: Wed Dec 14, 2005 8:32 am 
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Joined: Mon Oct 17, 2005 2:52 pm
Posts: 241
Location: France | French Riviera
I have found this sapphire for my treated sample data base.

This is a Titanium (Ti) diffused sapphire.

This treatment is hold, well know and well described in books....but
It seems to me that when a treatment is well know..with the time...it can be forgotten..

I think this is the better place to do a litle "help memory / recall" :)

Image

Without immersion (or a very close observation) this sapphire look like heat treated sapphire. (The heating clue are not always evident).

When immersed in water (or best in methylen iodide):
Image

The facets jonctions (edge?) and the "rim core" effect is not the same as in natural sapphire....

:?: Have you the reflex to put yours sapphire in water to detect this treatment? ;-)

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Jean-Marie Arlabosse
GemInterest.com


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PostPosted: Wed Dec 14, 2005 12:47 pm 
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Joined: Mon Oct 17, 2005 10:56 am
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Location: The frozen north prairie :-/
Good reminder, Gemca! And, as always, great photos :D . I'm going to have to hook up my printer soon and keep these kinds of pictures on hand!


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