thoughts on fluorescence

[windowshopper]

HELLO EXPERTS:

WHAT IS THE DEFINITION OF FLUORESCENCE? IVE SEEN SOME GORGEOUS STONES RECENTLY AND THE ONLY REASON I REJECTED THEM WAS THAT THEY HAD FLUORESCENCE. SOME FAINT SOME MODERATE BLUE

IN E, F AND G STONES DOES IT MATTER? HOW BIG A DETRIMENT IS IT ON FUTURE SALE OR TRADE IN? IF THE COLOR CLARITY AND CUT ARE GOOD?
THANKS
WS

 

[chrono]

Fluorescence is when the diamond will glow a particular colour (blue, yellow, etc) in UV light. Slight and faint fluoro isn't noticeable. Moderate and strong blue will give the diamond a blue-ish cast in strong sunlight and other UV sources.

It is more of a personal preference and doesn't affect diamonds in the D, E, and F ranges. Medium and strong Fluorescence can help an I, J and K diamond appear whiter. Personally, I like the effect and will shop for for diamonds with fluorescence even in the colourless range. It doesn't have much impact in terms of price. The only thing to watch out for is that strong fluoro may make the diamond look milky or cloudy.

 

[windowshopper]

THANKS CHRONO!

 

[KittenKat]

My old european cut is an 'F' with strong blue fluorescence... I LOVE it. It was more beautiful to my eyes than stone without fluorescence.

There's just something extra special about it to my eyes.

 

[Garry H (Cut Nut)]

fluoro is cheaper in stones higher quality stones that were typically sold with grading reports because sales people did not know what it meant and people like you were put off buying them. most jewelers and trade people prefer a diamond with fluoro to one without for personal use.

 

[windowshopper]

Garry cut nut--can you restate that--i am a bit confused.
WS

 

[Iceman]

Fluorescence gives off a very light blue or white glow like your white shirt under a black light only or ultraviolet ray.

Not all diamonds possess this quality.

Ask your Grandmother about blue white diamonds that is what they were called back in her age and she will tell you they were very sought after.

Then in the 70's I believe they determined that the diamond that fluoresced threw off the diamond graders eyes and were graded better then they should be. Thus the scare in not wanting the fluorescence in a diamond or asking lower prices because of the possible lower grading probability.

That was over 20 some years ago. Since then we have filters that off set that handicap and we can grade color on an equal playing field. People that are not educated only know its bad and have no idea why they think that.

The good part about fluorescence is it makes the diamond look whiter; you get more for your money.

Make sure it’s not a Yellow florescence that is bad for a white diamond unless it’s a fancy Yellow then it’s a plus.

The only ones you need to see or stay away from and that is only a fraction of the time is the strong fluoresce in a diamond. A few times not all the time it gives a milky look to the diamond.

All in all faint and medium, you are doing yourself a favor.

Best Regards
The Iceman

 

[windowshopper]

thanks iceman!

 

[quaeritur]

I've posted this pic before, but thought you might like to see what a D w/strong blue fluor can look like

.

 

[Iceman]

Window shopper;

Isnt it nice to get some straight talk about jewelry.

I know there are jewelers and / or posers that dont want you to learn this. They want you to be in the dark. I hope you've learned something. Keep posting about your experance with posers in the mall.

The Iceman

 

[JohnQuixote]

Iceman's reply is very complete.

Additionally, I like the way diamonds with medium flourescence appear in clubs with blacklights (boogielights)

. They are imbued with a subtle blue-white glow.

 

[10X]

While on the topic of fluorescence I thought I would post a picture of this unusual rough diamond from our collection which exhibits yellow fluorescence on the outer edges and blue fluorescence in the center.

 

[cushioncut]

----------------
On 10/22/2004 9:20:08 AM Garry H (Cut Nut) wrote:

fluoro is cheaper in stones higher quality stones that were typically sold with grading reports because sales people did not know what it meant and people like you were put off buying them. most jewelers and trade people prefer a diamond with fluoro to one without for personal use.----------------

Hi Garry. This is really interesting. Can you tell me why most jewelers and trade people prefer a diamond with fluorescence? Why do you prefer it?

I too have been avoiding diamonds with any fluorescence. Recently, I have come upon an H color stone that I like a lot, which has faint fluorescence -- would everyone agree that this is not a detriment?

 

[ep6585]

I bought my fiancee an H with medium blue fluorescence. Outside in direct sunlight it has a very slight blueish tint that makes it look whiter.

 

[mdx]

Noobie
Looks like the Yellow fluorescence (possibly Sodium) is on the outer skin so will most likely be cut away during polishing. Yellow Fluorescence does sometimes appear as a faint cloud inside a blue fluorescence diamond.


Johan

 

[stephinextremis]

I love fluorescent diamonds and would have serious reservations about purchasing a non-fluorescent stone. This is my Y-Z color radiant from Diamonds By Lauren, it lights up like the 4th of July, as you can see

I should have an E colored marquise with medium blue fluorescence coming to me soon as well, and if anyone wishes, I can try to put up some pics of that when it is in hand.




Stephanie