July 21-28—ARDEN, NORTH CAROLINA: 16th Annual Western North Carolina Rockhound Roundup; Mountain Area Gem and Mineral Association; Camp Stephens, daily 8:30-5
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Sat Jul 20, 2019 3:56 pm

All times are UTC - 4 hours




Post new topic Reply to topic  [ 14 posts ] 
Author Message
 Post subject: Identification of Blue spinel with colored filters/UV
PostPosted: Wed Sep 19, 2012 4:58 pm 
Offline
Gemology Online Veteran
User avatar

Joined: Wed Dec 30, 2009 11:44 am
Posts: 520
Location: PAKISTAN-Peshawar
Dear friends. I hope that you are well and in good mood. Today I want to share with all of you the presentation of the identification of blue spinel colored by cobalt with the help of colored filters and using UV lamp.


please click on the below link now it required no sing in or password


http://aggemologist.blogspot.com/


I hope that you will enjoy it.

with best regards

Hamid Usman Khattak (HUK)

_________________
Gemology for everyone.
HUK


Last edited by Osman khattak on Thu Sep 20, 2012 2:22 am, edited 2 times in total.

Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Wed Sep 19, 2012 5:25 pm 
Offline
Gold Member
User avatar

Joined: Fri Oct 12, 2007 10:22 pm
Posts: 1117
Location: Virginia
Thank you.

_________________
Soil is not dirt.
http://hmmdesign.net


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Wed Sep 19, 2012 6:26 pm 
Offline
Gemology Online Royal Princess

Joined: Mon Oct 17, 2005 10:56 am
Posts: 6462
Location: The frozen north prairie :-/
Okay, I joined Facebook even though I said I wouldn't ... I'm not joining anything else that I need a username and password :evil: .

Sorry, Hamid ... I would have really liked to see this :( .

_________________
IIJA Registered Gemologist
GIA Graduate Gemologist


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Wed Sep 19, 2012 6:35 pm 
Offline
Gemology Online Veteran
User avatar

Joined: Wed Dec 30, 2009 11:44 am
Posts: 520
Location: PAKISTAN-Peshawar
I do not understand Barbara O. Ellis, GG. are you feel difficulty to open the presentation? or what happens?

please PM me your email I will send the copy of presentation to you.

with best regards

HUK

_________________
Gemology for everyone.
HUK


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Wed Sep 19, 2012 11:34 pm 
Offline
Valued Contributor

Joined: Thu Sep 24, 2009 3:44 pm
Posts: 151
Location: Kingman,Az
Hi Osman
When I follow the link in your first post it says the file no longer exists.

I will send you a pm with my email as I would really like to see this.

Thanks
Harold


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Wed Sep 19, 2012 11:40 pm 
Offline
Gemology Online Royal Princess

Joined: Mon Oct 17, 2005 10:56 am
Posts: 6462
Location: The frozen north prairie :-/
Okay, before the link asked for a username and password; now it doesn't :? .

I am curious, Hamid -- Why were there no tests on natural blue spinel NOT colored by cobalt? The two shown side-by-side would be helpful :D . In fact, how was it determined ahead of time that the spinel crystals in matrix were colored by cobalt??

_________________
IIJA Registered Gemologist
GIA Graduate Gemologist


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Wed Sep 19, 2012 11:52 pm 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 19720
Location: San Francisco
Yes....it's difficult to sign up to view the Power Point.
Send it to me too and I'll see if I can upload it to a place where everyone can view it.
:D


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Thu Sep 20, 2012 2:29 am 
Offline
Gemology Online Veteran
User avatar

Joined: Wed Dec 30, 2009 11:44 am
Posts: 520
Location: PAKISTAN-Peshawar
Dear friends, very sorry to face a panic conditions :( :( :( . Now I convert the document from ppt to jpg format, Please click on the below link [-o< [-o< .

Now I hope that you will enjoy it.

http://aggemologist.blogspot.com/

with best regards


yours truly friend

Hamid Usman Khattak

_________________
Gemology for everyone.
HUK


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Thu Sep 20, 2012 8:16 am 
Offline
Active Member
User avatar

Joined: Wed Mar 03, 2010 12:16 pm
Posts: 68
Location: Maryland, USA
I did enjoy it! Thanks for supplying so many photographs.


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Sun Sep 23, 2012 8:51 pm 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 19720
Location: San Francisco
Attached is the Power Point Presentation on Spinel for view (pdf) or download.
Click here to download the file
[pdfview]http://www.gemologyonline.com/Separation%20of%20Blue%20Spinel%20Colored%20by%20Cobalt%20with.pdf[/pdfview]


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Mon Sep 24, 2012 2:13 am 
Offline
Gemology Online Veteran
User avatar

Joined: Wed Dec 30, 2009 11:44 am
Posts: 520
Location: PAKISTAN-Peshawar
Thanks Teacher. Now it looks a presentation.

with best regards

_________________
Gemology for everyone.
HUK


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Mon Sep 24, 2012 10:03 am 
Offline
Gemology Online Royal Princess

Joined: Mon Oct 17, 2005 10:56 am
Posts: 6462
Location: The frozen north prairie :-/
Hamid -- Could you please answer the questions I posted above? I'm truly curious about this. :|

_________________
IIJA Registered Gemologist
GIA Graduate Gemologist


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Tue Sep 25, 2012 2:28 pm 
Offline
Gemology Online Veteran
User avatar

Joined: Wed Dec 30, 2009 11:44 am
Posts: 520
Location: PAKISTAN-Peshawar
Dear Barbara O. Ellis, GG, I will soon adding in the presentation the Natural spinel which colored is not due to cobalt.

with best regards

_________________
Gemology for everyone.
HUK


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification of Blue spinel with colored filters/UV
PostPosted: Tue Sep 25, 2012 7:37 pm 
Offline
Valued Contributor
User avatar

Joined: Sun Jul 15, 2012 6:29 pm
Posts: 321
Location: Los Angeles, CA
can't wait. thanks Hamid!


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 14 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