August 24:—SAN ANTONIO, TEXAS: Retail show; Southwest Gem and Mineral Society of San Antonio; Sat. 10-5
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Wed Aug 21, 2019 9:32 am

All times are UTC - 4 hours




Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: Mint green flame-fusion spinel
PostPosted: Sat May 06, 2017 3:20 pm 
Offline
Platinum Member
User avatar

Joined: Fri Jun 25, 2010 10:06 pm
Posts: 2224
Location: Chapel Hill, NC / Toronto, ON
Hey friends, I recently got my hands on some very strange mint-green flame fusion spinel. Very typical spinel boules, but it's definitely different from the yellow material that fluoresces chrome green, and very much different from the bluish-green stuff. It's a pure mint green, hints of yellow and no hints of brown at all, that looks exactly like a mint grossular.

Does anyone have any info on it? Suspected chromophores, etc?


Top
 Profile  
Reply with quote  
 Post subject: Re: Mint green flame-fusion spinel
PostPosted: Sat May 06, 2017 9:54 pm 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 19796
Location: San Francisco
Humph.... this could cause some potential confusion.
Separation?

What is the RI of this material?
SG of the material?
LW abd SW UV?

Singly refractive...does it show strain when viewed through the polariscope?


Top
 Profile  
Reply with quote  
 Post subject: Re: Mint green flame-fusion spinel
PostPosted: Sun May 07, 2017 3:14 am 
Offline
Valued Contributor
User avatar

Joined: Wed Mar 26, 2014 8:23 am
Posts: 252
Do you mean one of the syn. spinel Erinite colours?

Attachment:
Verneuil.jpg
Verneuil.jpg [ 43.62 KiB | Viewed 900 times ]


Top
 Profile  
Reply with quote  
 Post subject: Re: Mint green flame-fusion spinel
PostPosted: Sun May 07, 2017 6:38 pm 
Offline
Platinum Member
User avatar

Joined: Fri Jun 25, 2010 10:06 pm
Posts: 2224
Location: Chapel Hill, NC / Toronto, ON
steinfroilein wrote:
Do you mean one of the syn. spinel Erinite colours?

Nope, it's none of these!!! It's not even made by Djeva :D


Last edited by Faceting 101 by Arya on Sun May 07, 2017 7:18 pm, edited 1 time in total.

Top
 Profile  
Reply with quote  
 Post subject: Re: Mint green flame-fusion spinel
PostPosted: Sun May 07, 2017 6:38 pm 
Offline
Platinum Member
User avatar

Joined: Fri Jun 25, 2010 10:06 pm
Posts: 2224
Location: Chapel Hill, NC / Toronto, ON
Barbra Voltaire wrote:
Humph.... this could cause some potential confusion.
Separation?

What is the RI of this material?
SG of the material?
LW abd SW UV?

Singly refractive...does it show strain when viewed through the polariscope?

Hey Barbra! Given that I have absolutely no gem testing equipment, I'll have Steve Challener pick it up the next time he stops by, and will have him test it out.


Top
 Profile  
Reply with quote  
 Post subject: Re: Mint green flame-fusion spinel
PostPosted: Sun May 07, 2017 7:01 pm 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 19796
Location: San Francisco
Great. Looking forward to it.


Top
 Profile  
Reply with quote  
 Post subject: Re: Mint green flame-fusion spinel
PostPosted: Fri May 19, 2017 12:56 am 
Offline
Active Member
User avatar

Joined: Tue Jan 31, 2017 12:53 am
Posts: 76
Doesn't the older yellow, yellow green, mint green flouresce a yellow green or light green and not a chrome green? I have an old study stone from 20 years ago that flouresces such.


Attachments:
image.jpeg
image.jpeg [ 45.69 KiB | Viewed 821 times ]
Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 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