GemologyOnline.com
https://www.gemologyonline.com/Forum/phpBB2/

Mint green flame-fusion spinel
https://www.gemologyonline.com/Forum/phpBB2/viewtopic.php?f=24&t=23713
Page 1 of 1

Author:  Faceting 101 by Arya [ Sat May 06, 2017 3:20 pm ]
Post subject:  Mint green flame-fusion spinel

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?

Author:  Barbra Voltaire, FGG [ Sat May 06, 2017 9:54 pm ]
Post subject:  Re: Mint green flame-fusion spinel

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?

Author:  steinfroilein [ Sun May 07, 2017 3:14 am ]
Post subject:  Re: Mint green flame-fusion spinel

Do you mean one of the syn. spinel Erinite colours?

Attachment:
Verneuil.jpg
Verneuil.jpg [ 43.62 KiB | Viewed 2399 times ]

Author:  Faceting 101 by Arya [ Sun May 07, 2017 6:38 pm ]
Post subject:  Re: Mint green flame-fusion spinel

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

Author:  Faceting 101 by Arya [ Sun May 07, 2017 6:38 pm ]
Post subject:  Re: Mint green flame-fusion spinel

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.

Author:  Barbra Voltaire, FGG [ Sun May 07, 2017 7:01 pm ]
Post subject:  Re: Mint green flame-fusion spinel

Great. Looking forward to it.

Author:  Seaglow [ Fri May 19, 2017 12:56 am ]
Post subject:  Re: Mint green flame-fusion spinel

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 2320 times ]

Page 1 of 1 All times are UTC - 4 hours
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/