fluorescence

[msumavrik]

Help...I am close to making a decision on a 2.06 round brilliant AGS Cert/Ideal Cut&Polish&symmetry (Triple 0) but have noticed on the cert that the fluorescence is a "medium yellow". Is this ANYTHING to be concerned about? What''s the best way to view this stone to see ANY sort of color changes that would affect my buying decision. How should it affect price if any?

I''ve read alot about blue fluorescence but haven''t heard anything much diamonds fluor other colors.

 

[Rank Amateur]

As a Rank Amateur, I have not seen all that many diamonds, but I've never seen one whose "normal" appearance is affected by fluorescence. If someone can post some pics of an over-blue (or yellow) stone I'd love to see it!

If it were me I'd look at it under "store" lights, incandescent, fluorescent, natural sun, natural shade and anything else I could think of, and if it didn't haze or tint I'd have no worries. An independent appraiser should also be able to tell you if the fluor has any visible effect.

What color is it? The more colorless it is the more I would scrutinize it.

R/A

 

[diamondlil]

That would be great to see some pics with stones of different color fluorescence since I have only seen blue. Would it also be possible to post a picture of a stone with the "milky/oily" effect we have all read about? I can understand how a stone with medium or slight blue fluorescence could help the color of a warmer stone look whiter, but what would yellow do?

Diamondlil

 

[Adrienne]

I have never seen yellow fluor in a diamond -

but since blue fluor can have a blue tint, thus counteracting the yellow warmth of a stone, I would think that a yellow fluor would have a yellow tint and enhance the warmth of the diamond.

If you like some warmth and yellow tones in your diamond then yellow fluor would be fine... if you prefer the colorless D-F range then yellow fluor is probably bad, for it won't look colorless.

 

[mike04456]

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On 8/8/2003 1

6

4 PM Adrienne wrote:
I have never seen yellow fluor in a diamond -

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One of the six little diamonds in my wedding ring has noticeable yellow fluorescensce. It looks neat under a UV light but has absolutely no effect on the appearance otherwise.

 

[fire&ice]

If medium to strong blue can make a stone face up whiter, than it would be logical to me that the yellow Fluor may make the stone face up w/ *more* body color (yellow).

I know in a previous thread "neg. & faint" did not affect the stone. I'm not so sure about medium. Having seen the affect of med/ strong Blue has on a stone, I would express some concern.

What color is the stone?

 

[fire&ice]

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On 8/8/2003 1:27:51 PM LawGem wrote:

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On 8/8/2003 1

6

4 PM Adrienne wrote:


I have never seen yellow fluor in a diamond -

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One of the six little diamonds in my wedding ring has noticeable yellow fluorescensce. It looks neat under a UV light but has absolutely no effect on the appearance otherwise.
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Yeah, but LG - the stone in consideration is a 2c which would naturally show more body color than a smaller stone.

 

[elmo]

I don't really care if medium yellow doesn't affect appearance, I expect that it does affect marketability and probably should affect price, sort of like medium blue in a D. I'd pass simply for that reason. I don't think the comparison between accent stones and 2 carater is fair...a nice 2 carat stone costs a lot of money, which I'd spend carefully.

 

[DiamondExpert]

Elmo has tickled me pink because I would have to agree with his advice...I would avoid the medium yellow fluorescence in a stone this size even if I couldn't detect (rest assured, if you tried to resell in the future, your potential purchasers would claim they can see a negative effect) it under any lighting conditions...unless the price was an absolute steal...

 

[msumavrik]

The stone is a G in color with SI2 clarity...asking price is 12700.

 

[diamondsman]

Med yellow really has no effect on the stone as far it being milky or hazy looking,The only problem I see is in the future when you decide one day to either sell or trade to a larger size, you would have a problem getting a good price for it, the person who would be purchasing,or upgrading it for you ,will knock the price due to it's med yellow flour., Just another tool to buy the stone cheaper.I would try to stay away from it just because of that fact.
If you are getting such an expensive stone I would stick to the none or faint flour.!!
Besides i think you are paying too much just beacuse it is ags ideal/cut. there plenty of other stones that are just as good cut that are less expensive!!with g.i.a certs!!

good luck.

 

[fire&ice]

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On 8/11/2003 7:42

3 AM msumavrik wrote:

The stone is a G in color with SI2 clarity...asking price is 12700.
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Personally, I'm with elmo & DE. I would pass. It's not a really good deal even if the stone did not have med/yellow fl.

Good luck.