Is this a vanadium chrysoberyl?

[glitterata]

I bought this chrysoberyl ring from TRR, alerted by the SGBTP thread. It's 2.23 ct, nicely cut, no window, a very pretty minty green. It glows bright red under my 395nm uv flashlight. In incandescent light, all the color drains out, leaving it silvery.

Do you think it's a vanadium chrysoberyl?





With my yellow chrysoberyl at the right:



UV flashlight:



Incandescent light (the only one left in my apartment--a nightlight--apologies for the dusty wall!):

 

[Autumn in New England]

Could be, but it would really need to be tested for traces of vanadium to be sure. Pretty piece regardless... enjoy!!

 

[Starstruck8]

I'm thinking it could be a 'weak alexandrite', i.e. coloured by chromium. This would be consistent with the colour shift and the fluorescence. Of course, it may have some vanadium as well. You would have to test to know for sure.

The stone in this old post seems a bit similar:
https://www.pricescope.com/communit...oberyl-with-fluorescence.238571/#post-4300483

Whatever it is, it's an attractive stone.

 

[Saphir]

Tourmaline has no fluorescence

 

[glitterata]

Tourmaline has no fluorescence

I got it from TRR, and it came with their gemologist's "valuation report" declaring it to be a chrysoberyl. It looks and behaves like a chrysoberyl; I have no reason to think it's NOT a chrysoberyl. My question was whether it was an ordinary chrysoberyl or a special one, such as a v-chrysoberyl or alexandrite. (It doesn't change color enough to be convincing as an alex, though.)

I guess I could send it to a lab, but that would cost as much as the ring itself. Well, depending on the lab.

 

[Lexililac]

Thats a V-chryso with chromium content. Ive similar ones as youres. Lovely green daylight color! I love mine! They have beside the low iron/Vanadium additionaly chromium inside. So they react to UV. Mine are from Tunduru, Tanzania.

 

[glitterata]

Thats a V-chryso with chromium content. Ive similar ones as youres. Lovely green daylight color! I love mine! They have beside the low iron/Vanadium additionaly chromium inside. So they react to UV. Mine are from Tunduru, Tanzania.

Thanks, @Lexililac ! Do you have a thread about yours?

 

[Lexililac]

Thanks, @Lexililac ! Do you have a thread about yours?

No. I can do some pic's and post them later here.

 

[Lexililac]

The top left two drop-shaped ones are closest to yours.
I posted that one ones in a thread about UV reactions...

 

[glitterata]

The top left two drop-shaped ones are closest to yours.
I posted that one ones in a thread about UV reactions...

Thank you so much! That is very helpful and interesting.

 

[Lexililac]

Low iron/ high Vanadium creates the intense V-chysos witch can go above Paraiba in color in best cases. Is there iron in it the blue part of the V-chryso disapear and in higher concentrations yellow will come. Chromium can have, beside the UV reaction, bit of a color shift effect (daylight/yellow light). But not necessary. If there is high Vanadium that gives the stone a good saturation and just low chromium, the good saturated V-color covers that sensitive color shift. The color shift comes better in less saturation and lighter tones. Thats just after my experiance. Nature can always have surprises and there are rare exeptions (additional elements with effects,ect.) that somehow make them behave and look different.

 

[Odyssey44]

Low iron/ high Vanadium creates the intense V-chysos witch can go above Paraiba in color in best cases. Is there iron in it the blue part of the V-chryso disapear and in higher concentrations yellow will come. Chromium can have, beside the UV reaction, bit of a color shift effect (daylight/yellow light). But not necessary. If there is high Vanadium that gives the stone a good saturation and just low chromium, the good saturated V-color covers that sensitive color shift. The color shift comes better in less saturation and lighter tones. Thats just after my experiance. Nature can always have surprises and there are rare exeptions (additional elements with effects,ect.) that somehow make them behave and look different.

Lexi, what is that pink stone in your profile picture? A spinel? A sapphire? I absolutely adore that color. It is perfection to me.