January 24 Through February 4—TUCSON, ARIZONA: Annual show
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 Post subject: Re: Chromian sphene / Sarany-Russia / Demantoid and Tsavorit
PostPosted: Thu Nov 09, 2017 10:30 am 
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The article I mentioned previously is now published in the Fall 2017 issue of G&G. You can tell which article is mine... just scroll down and look for the color green.

In the article, you can scroll way down to Figures 11 and 12 to see how Fe concentration affects Cr fluorescence.


Last edited by Brian on Thu Nov 09, 2017 3:01 pm, edited 1 time in total.

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 Post subject: Re: Chromian sphene / Sarany-Russia / Demantoid and Tsavorit
PostPosted: Thu Nov 09, 2017 2:57 pm 
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Yes, saved in ibooks!!

Will read it the next days - interesting new high(er) vanadium bearing garnet (blue) - need one!

Found this CC garnet in Munichshow too - 1,30 ct with 1,759 RI.
The stones surprisingly clean, well cut and per vendor from Sri Lanka. With my heandheld spectroscope a broad band from 560 to around 630 nm so no greenishyellow-yellow-orange and orange-red.

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6000 Kelvin
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incandescent light

Think quite high chrome content..

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