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Fluorescence?...should I stay away from it?

rook02

Rough_Rock
Joined
Sep 12, 2012
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I am looking at an I color diamond. Should I stay away from Strong and very strong fluorescence? How is that going to affect the diamond?
 
That topic has been discussed much in this forum. Perhaps search for those threads and read through them.

If it's yellow or orange fluor, then it can make the stone look yellower.

If blue, it's probably okay so long as it doesn't cause an oily or hazy look, or doesn't look too violet in certain lights. Blue fluor works a little like laundry bluing: Can make whites look whiter. So, it can make certain stones face up whiter but you'd still see tint from the side, most likely.

Fluor also lowers the cost or the diamond a little. There's more info on that in the numerous threads.
 
TC1987|1354798471|3323982 said:
That topic has been discussed much in this forum. Perhaps search for those threads and read through them.

If it's yellow or orange fluor, then it can make the stone look yellower.

If blue, it's probably okay so long as it doesn't cause an oily or hazy look, or doesn't look too violet in certain lights. Blue fluor works a little like laundry bluing: Can make whites look whiter. So, it can make certain stones face up whiter but you'd still see tint from the side, most likely.

Fluor also lowers the cost or the diamond a little. There's more info on that in the numerous threads.


I agree, except that an I colour stone with blue fluor out in the sun should not show any tint from the side. Out in the sun, an I colour stone with flour should look whiter all around. I've had a few stones with fluor, med and strong, and have seen many others and this is what I've observed. Indoors, lower colour stones would still show a slight tinge, again all around and not just from the side. But of course very well cut stones should face up whiter than less well cut stones (regardless of the fluor) indoors and outdoors, and slightly less white from the side.

Also, a stone wtih very srong blue flour would most prob show a slight blue/ purple tinge in the sun. With MBF, you almost can't really see any blue/ violet tingee unless you know what to look for. With SBF, you may notice a tinge but it won't be as obvious as VERY SBF.

OP, I personally love the fluor effect, but it's not everyone's cup of tea. You will find that a lot of PS'ers love this effect too

I believe with D-E-F, even G-H tones, blue fluor helps to reduce pricing, but am not sure about I-J and further down the scale. I suspect fluor may not make a difference and *might* even in some cases raise the price, simply b/c blue bluor would make slightly tinted stones look whiter.
 
Thanks everyone and thanks for posting this. I have wondered this too in clolorless diamonds.
 
I would consider fluorescence highly desirable in an I color stone. In fact, I might only consider I color if it did have medium or strong blue fluorescence. I have a G with strong blue. I never see a hint of it unless I turn on a UV light. But my diamond appears very white!

There was some discussion about lower clarity and fluorescence and the possibility that it really isn't fluorescence that makes some stones cloudy...it may be the combination of the fluorescence combined with clouds or other inclusions that make the stone appear cloudy. In any event, the stones with negative effects are very rare.
 
I'm biased but I love my very strong blue! Here's a couple pics. The first was on a cloudy day and the second was in bright bright sun. Sometimes it actually almost looks periwinkle, which I love. Its white any other time!
Edit- She's graded G color

imag0128_burst002_0.jpg

_2219.jpg
 
finallylooking said:
I'm biased but I love my very strong blue! Here's a couple pics. The first was on a cloudy day and the second was in bright bright sun. Sometimes it actually almost looks periwinkle, which I love. Its white any other time!
Edit- She's graded G color
That is so cool!
 
Phoenix|1354799391|3323986 said:
TC1987|1354798471|3323982 said:
That topic has been discussed much in this forum. Perhaps search for those threads and read through them.

If it's yellow or orange fluor, then it can make the stone look yellower.

If blue, it's probably okay so long as it doesn't cause an oily or hazy look, or doesn't look too violet in certain lights. Blue fluor works a little like laundry bluing: Can make whites look whiter. So, it can make certain stones face up whiter but you'd still see tint from the side, most likely.

Fluor also lowers the cost or the diamond a little. There's more info on that in the numerous threads.


I agree, except that an I colour stone with blue fluor out in the sun should not show any tint from the side. Out in the sun, an I colour stone with flour should look whiter all around. I've had a few stones with fluor, med and strong, and have seen many others and this is what I've observed. Indoors, lower colour stones would still show a slight tinge, again all around and not just from the side. But of course very well cut stones should face up whiter than less well cut stones (regardless of the fluor) indoors and outdoors, and slightly less white from the side.

Also, a stone wtih very srong blue flour would most prob show a slight blue/ purple tinge in the sun. With MBF, you almost can't really see any blue/ violet tingee unless you know what to look for. With SBF, you may notice a tinge but it won't be as obvious as VERY SBF.

OP, I personally love the fluor effect, but it's not everyone's cup of tea. You will find that a lot of PS'ers love this effect too

I believe with D-E-F, even G-H tones, blue fluor helps to reduce pricing, but am not sure about I-J and further down the scale. I suspect fluor may not make a difference and *might* even in some cases raise the price, simply b/c blue bluor would make slightly tinted stones look whiter.

I've never seen a stone with strong blue flour in person. If you find one you like, be sure it doesn't have an oily look (be sure the vendor has the stone in-house so they can verify) and possibly look at it before you have it set to be sure you love it!
 
finallylooking|1354805118|3324048 said:
I'm biased but I love my very strong blue! Here's a couple pics. The first was on a cloudy day and the second was in bright bright sun. Sometimes it actually almost looks periwinkle, which I love. Its white any other time!
Edit- She's graded G color

Very pretty, finallylooking! I love the color.
 
Thanks ladies!

OP here's another picture. Keep in mind its on the phone so its a really awful picture (or I'm just bad at taking them). This is under fluorescent light at work. About the white she is normally. The side stones are GH color, as well. I swear they're perfectly white in person.

imag0168_burst002.jpg
 
finallylooking|1354808468|3324118 said:
Thanks ladies!

OP here's another picture. Keep in mind its on the phone so its a really awful picture (or I'm just bad at taking them). This is under fluorescent light at work. About the white she is normally. The side stones are GH color, as well. I swear they're perfectly white in person.

This so makes me curious about getting a diamond with Flour in it to play around with it! ;))
 
MC|1354810280|3324176 said:
finallylooking|1354808468|3324118 said:
Thanks ladies!

OP here's another picture. Keep in mind its on the phone so its a really awful picture (or I'm just bad at taking them). This is under fluorescent light at work. About the white she is normally. The side stones are GH color, as well. I swear they're perfectly white in person.

This so makes me curious about getting a diamond with Flour in it to play around with it! ;))

Its soooo cool. My fiance was wouldn't like explaining it to people (since it did get us a considerable mark down compared to those w/out fluoro) but I love it and so do people who notice it. It gets really blue under mall parking lot lights for some odd reason.
 
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