January 24 Through February 4—TUCSON, ARIZONA: Annual show
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Thu Mar 28, 2024 8:12 am

All times are UTC - 4 hours




Post new topic Reply to topic  [ 5 posts ] 
Author Message
 Post subject: Jeremejevite?
PostPosted: Tue Feb 19, 2019 6:06 am 
Offline
Established Member

Joined: Tue Nov 01, 2016 6:12 am
Posts: 18
Get six peces strange Madagascar stone. cut 1 pc, 0.86ct , loup clean.

Is it possible ? Jeremejevite.

Just test by myself.

sepcific gravity: 3.29
preochrosim:colorless-blue


Attachments:
je02.jpg
je02.jpg [ 107.69 KiB | Viewed 3999 times ]
je01.jpg
je01.jpg [ 114.82 KiB | Viewed 3999 times ]
Top
 Profile  
Reply with quote  
 Post subject: Re: Jeremejevite?
PostPosted: Tue Feb 19, 2019 7:47 am 
Offline
Moderator
User avatar

Joined: Mon Apr 02, 2012 9:31 pm
Posts: 4015
Location: North Carolina
I guess anything is possible from madagascar, but while the sg would include jermejevite as a possibility I don't think it is diagnostic on its own. RI would be very helpful as well, especially since you already have a faceted stone there.

_________________
Rough and cut classic and exotic synthetic gems:https://store.turtleshoard.com


Top
 Profile  
Reply with quote  
 Post subject: Re: Jeremejevite?
PostPosted: Tue Feb 19, 2019 7:39 pm 
Offline
Gemology Online Veteran
User avatar

Joined: Mon Jun 16, 2014 1:10 pm
Posts: 850
Madagascar is a source for colorless Jeremejevite - quite large stone compared to Burma and Namibia...

Nice blue like this one ai know only from Namibia and in tiny crystals from Eifel district in Germany.

Kornerupine? Grandidierite?

Keep us updated...

_________________
http://www.gemstore-24.com/
gemstones, precision cuts and more...


Top
 Profile  
Reply with quote  
 Post subject: Re: Jeremejevite?
PostPosted: Wed Feb 20, 2019 12:06 am 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 21602
Location: San Francisco
Blue kornerupine would be my guess.
The SG is about right and it can be pleochroic with a colorless direction.


Top
 Profile  
Reply with quote  
 Post subject: Re: Jeremejevite?
PostPosted: Wed Feb 20, 2019 2:53 am 
Offline
Gemology Online Veteran
User avatar

Joined: Mon Jun 16, 2014 1:10 pm
Posts: 850
Same with the „Tsavorite“ -RI would be helpful..

Where are you located? Madagascar?

_________________
http://www.gemstore-24.com/
gemstones, precision cuts and more...


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 15 guests


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