Please tell me about the fluorescence in my diamond...

[RaiKai]

My ring has an uncerted centre stone (antique ring, bought as is, etc). It is an estimated in setting as a K so is likely lower, but I suspected it might have some fluorescence. I was curious so I got a little UV/Blacklight flashlight today to check out my suspicions and here are the results taken in a dark room!:






I assume those two stones in the cluster are very strong, but what about the centre stone? I am thinking faint or medium?

This is just for my own personal interest, I just think it's pretty cool. I am going to go home tonight and try this on my small selection of other diamonds too!

 

[RockBrat]

I believe the center is medium and two stones in the halo are very strong. Your ring is pretry!

 

[RaiKai]

Thanks RockBrat!

 

[Diamond_Hawk]

Any estimation given based on pictures online is, of course, a best guess. There are very smart people on this forum that may get it right, or they may miss by a bit. It might be worth the cost of an independent appraisal to satisfy your own curiosity.

 

[dwj6211]

That's very cool. I did the same thing to some older antique rings I have—and I too was shocked at the results of seeing a couple of diamonds light up like fire with fluorescence!

 

[Texas Leaguer]

In addition to considerable debate over the impacts of fluorescence, there is also inconsistency in the way fluorescence is observed and evaluated. Part of that stems from the light source used to activate the fluorescence.

What you see with any particular UV light source may be quite different from what the lab graders see in their grading environment.

GIA did a study in 2013 of several commonly used UV light sources and found wide variation in output of the specific fluorescence stimulating wavelengths. Consequently, the fluorescence reaction observed will be quite different among these devices.

Having said all that, the accent stones do appear to be very strong. The center stone looks intriguing. It's not really glowing very much, but in the image it appears to have a blue hue.

Very interesting

I agree with DiamondHawk, if you are interested in learning more, go see a qualified appraiser. Many times they will not charge very much if you just want a quick consultation. You may also learn other interesting things about your ring!

 

[Rockdiamond]

Cool pictures! and cool ring!!

Of course an in person inspection is needed for total surety- but I'd say 95% sure your center stone has no fluorescence.
The fact that two of the side diamonds are lighting up the way they are is why I feel comfortable making this assessment.
That shows us how a stone with flouro would react in this lighting setup you used.
The two stones lighting up are most likely medium or strong blue.

 

[John P]

I'll play! Hmmm...PS XBox or PS Playstation?

Nope. I'm busting out my PS Wii... Just saying, clearly, we're all quarterbacking from our armchairs on this one

That said, I'm pressing Left-Shift-B!

It's the same play Rockdiamond just called on his Commodore 64... ...None and 2 Strong Blue.

How would that hold up in actual assessment? No idea. But those are groovy photos.