Is This Really "None" Fluoresence?

[Mike714321]

I bought this diamond from Whiteflash and it's set in a mounting from a local B&M store. I love it. She loves it. It's not getting returned. But I am curious.... is this what "None" fluoresence on a GIA graded stone can look like? GIA report says "None" so I thought piece of cake, but after getting it in direct sunlight at about 5:00pm I'd guess it to be "Faint" or maybe even "Medium". Any thoughts or opinions? Did the stone get a bum fluoresence grade?

GIA 5151986026
http://s3.postimg.org/vuz2trppt/IMG_20140728_175714882_HDR.jpg
http://s14.postimg.org/qgmy6r1in/IMG_20140728_175634415_HDR.jpg
http://s12.postimg.org/9ay34j72z/IMG_20140728_175340260_HDR.jpg

Thanks!

 

[distracts]

Those pictures are huge and won't resize on the monitor for me, but it doesn't look like fluorescence to me. The larger diamond will almost always appear darker than melee in sunlight. If you search the forum for "diamond in sunlight" you'll be able to see a lot of pictures. Questions about diamond appearance in sunlight are asked almost daily.

 

[luvdajules]

If it's a sunny day, it might be reflecting the blue in the sky. Get a pen black light and put it on your diamond, if it glows blue then it has
fluro. Just a quick answer, maybe an expert can chime in.

 

[Mike714321]

Sorry about the picture size, I guess not all browsers re-size pictures to fit to screen. The melee is better in color. I contemplated requesting matching melee to match the "I" diamond but was pretty much advised by EVERYONE not to. Hmm...

 

[drk14]

Since it's a GIA-graded stone purchased from WF, you can pretty much be assured that if the report says "None" for fluorescence, then there is no fluorescence.

The blue you see is a reflection of the blue sky, plus in one of the pictures there appears to be some dispersion of the direct sunlight, which is generating some indigo fire at the edge of the reflected image of the sun.

If you don't feel like searching the forums, here are two exampes of threads that talk about "blue sky" vs. fluorescence confusion:
https://www.pricescope.com/community/threads/new-and-not-sure-if-my-diamond-is-low-quality.205057/
https://www.pricescope.com/community/threads/non-fluorescent-diamond-looks-blue-in-the-sun.178744/

 

[distracts]

Sorry about the picture size, I guess not all browsers re-size pictures to fit to screen. The melee is better in color. I contemplated requesting matching melee to match the "I" diamond but was pretty much advised by EVERYONE not to. Hmm...

The larger diamond will look darker than the melee no matter what color differences are. I didn't say more yellow, I said darker. You can do a search for that too, it has to do with how your eyes resolve the different sizes of sparkles. You can see the big areas of contrast on the big stone much more easily and your eye is just kind of mushing the melee stones together (uhhh, there are much more scientific explanations elsewhere) so they look brighter by comparison. It's totally normal and just eye stuff. This is why going lower in melee color doesn't really do much, because you'll still get that effect anyway since it has nothing to do with body color of the diamond and everything to do with sparkliness. Yssie can explain this really well.

Yssie: "I reason the fact that in a larger stone the eye isn't perpetually assaulted by bright white twinkle is the reason a centrestone will always look "less bright" or "darker" than any melee in the band, assuming brightness and darkness are defined as functions of visible light output colour. M/N/O/P melee would look like pale yellow dots instead of white dots.. so contrast is in truth an independent entity from body colour"
- [URL='https://www.pricescope.com/community/threads/high-contrast-in-ideal-cut-diamonds-and-effect-on-appearance.144474/']https://www.pricescope.com/community/threads/high-contrast-in-ideal-cut-diamonds-and-effect-on-appearance.144474/[/URL]

 

[Mike714321]

The blue you see is a reflection of the blue sky, plus in one of the pictures there appears to be some dispersion of the direct sunlight, which is generating some indigo fire at the edge of the reflected image of the sun.

Wow, that picture of the solitaire you posted yesterday in that thread is a great example! Glad to know it's the sky and not fluoresence. After all the reading about GIA and AGS and which is more strict, more loose, more better (lol) I figured it surely wasn't fluoresence, just would never have believed that the blue sky would reflect that much in it!

Thanks!

 

[Mike714321]

I didn't say more yellow, I said darker.

Ahh, you're right, missed that important part. Makes sense. Thanks for the info on color and the quote! Still learning!

 

[Garry H (Cut Nut)]

I bought this diamond from Whiteflash and it's set in a mounting from a local B&M store. I love it. She loves it. It's not getting returned. But I am curious.... is this what "None" fluoresence on a GIA graded stone can look like? GIA report says "None" so I thought piece of cake, but after getting it in direct sunlight at about 5:00pm I'd guess it to be "Faint" or maybe even "Medium". Any thoughts or opinions? Did the stone get a bum fluoresence grade?

GIA 5151986026
http://s3.postimg.org/vuz2trppt/IMG_20140728_175714882_HDR.jpg
http://s14.postimg.org/qgmy6r1in/IMG_20140728_175634415_HDR.jpg
http://s12.postimg.org/9ay34j72z/IMG_20140728_175340260_HDR.jpg

Thanks!

You got good answers
the system works!

but why on earth as an educated consumer would you go out of your way to buy a non fluoro diamond!!!!!!

 

[ebadevil]

I bought this diamond from Whiteflash and it's set in a mounting from a local B&M store. I love it. She loves it. It's not getting returned. But I am curious.... is this what "None" fluoresence on a GIA graded stone can look like? GIA report says "None" so I thought piece of cake, but after getting it in direct sunlight at about 5:00pm I'd guess it to be "Faint" or maybe even "Medium". Any thoughts or opinions? Did the stone get a bum fluoresence grade?

GIA 5151986026
http://s3.postimg.org/vuz2trppt/IMG_20140728_175714882_HDR.jpg
http://s14.postimg.org/qgmy6r1in/IMG_20140728_175634415_HDR.jpg
http://s12.postimg.org/9ay34j72z/IMG_20140728_175340260_HDR.jpg

Thanks!

You got good answers
the system works!

but why on earth as an educated consumer would you go out of your way to buy a non fluoro diamond!!!!!!

I loled +1

 

[Mike714321]

but why on earth as an educated consumer would you go out of your way to buy a non fluoro diamond!!!!!!

Honestly I wasn't too picky with fluoresence. I didn't want strong, but would have been fine with anything else really I think. This diamond just happened to be none!

 

[yssie]

Since it's a GIA-graded stone purchased from WF, you can pretty much be assured that if the report says "None" for fluorescence, then there is no fluorescence.

The blue you see is a reflection of the blue sky, plus in one of the pictures there appears to be some dispersion of the direct sunlight, which is generating some indigo fire at the edge of the reflected image of the sun.

If you don't feel like searching the forums, here are two exampes of threads that talk about "blue sky" vs. fluorescence confusion:
https://www.pricescope.com/community/threads/new-and-not-sure-if-my-diamond-is-low-quality.205057/
https://www.pricescope.com/community/threads/non-fluorescent-diamond-looks-blue-in-the-sun.178744/

I've come to the conclusion that the GIA pulls fluor grades from a hat, and I've talked to a handful of tradepeople who've expressed similar sentiments re. unpredictability in GIA fluor grade assignments.

One of the largest pair of sidestones has "faint" fluor by the GIA, the other has "none".
Both of the middle pair of sidestones have "none" per the GIAs.
I believe I was told the light was advertised 365nm, so I'd assume actual emission 370-375.




That said I completely agree with you re. WF's evaluation - if WF says there's no fluor then there's no fluor!

 

[TC1987]

^ Note that non-fluorescent diamonds just turn purple, reflecting the color of the blacklight the way that non-fluorescent one reflected the blue sky.

Fluorescent ones actually glow blue or orange or yellow some other color.

 

[diamondseeker2006]

I love fluorescence and buy it when I can. You really have to use a black light to see it.

 

[Circe]

Since it's a GIA-graded stone purchased from WF, you can pretty much be assured that if the report says "None" for fluorescence, then there is no fluorescence.

The blue you see is a reflection of the blue sky, plus in one of the pictures there appears to be some dispersion of the direct sunlight, which is generating some indigo fire at the edge of the reflected image of the sun.

If you don't feel like searching the forums, here are two exampes of threads that talk about "blue sky" vs. fluorescence confusion:
https://www.pricescope.com/community/threads/new-and-not-sure-if-my-diamond-is-low-quality.205057/
https://www.pricescope.com/community/threads/non-fluorescent-diamond-looks-blue-in-the-sun.178744/

I've come to the conclusion that the GIA pulls fluor grades from a hat, and I've talked to a handful of tradepeople who've expressed similar sentiments re. unpredictability in GIA fluor grade assignments.

One of the largest pair of sidestones has "faint" fluor by the GIA, the other has "none".
Both of the middle pair of sidestones have "none" per the GIAs.
I believe I was told the light was advertised 365nm, so I'd assume actual emission 370-375.



Yep, I was just coming to post this - I took the GIA grading course, and there's a really broad objective scale. I've seen stones I'd grade as medium marked none. That said, your stone doesn't look to be exhibiting anything eye-visible, so I think you're safe.
That said I completely agree with you re. WF's evaluation - if WF says there's no fluor then there's no fluor!