URAL MINERALOGICAL FESTIVAL, July 3 to 21, 2019, in Yekaterinburg City, Ural region, Russia
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Mon Jun 17, 2019 7:03 pm

All times are UTC - 4 hours




Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: Sapphire: Have you the immersion reflex?
PostPosted: Wed Dec 14, 2005 8:32 am 
Offline
Valued Contributor
User avatar

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? ;-)

_________________
Regards

Jean-Marie Arlabosse
GemInterest.com


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Wed Dec 14, 2005 12:47 pm 
Offline
Gemology Online Royal Princess

Joined: Mon Oct 17, 2005 10:56 am
Posts: 6462
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!


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Gemology Style ported to phpBB3 by Christian Bullock