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Fluorescence - but wait not the usual question!

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justme

Shiny_Rock
Joined
Dec 5, 2002
Messages
184
Has anyone ever seen fluorescence show up in red tones?

I have a line bracelet and for kicks held it up to a blacklight - the diamonds are H VS2 - about 5 of them fluoresced slightly. But the biggest surprise was the one that fluoresced a reddish / orange color.

Then tried a friends ring and one of her small rounds fluoresced the same color.

Any explainations?

Kind of wild to see!
 

Richard Sherwood

Ideal_Rock
Joined
Sep 25, 2002
Messages
4,924
I've forgotten his name, but the fellow who owns MidWest Gems has a nice section on fluorescence in his website.

There he describes the following fluorescent colors which have been encountered in the "red" category:

-----------
It must be understood that under red the shade may vary from deep plum
red, through crimson, to rose and pink...
-----------

It is definitely a rare occurence to encounter this hue of fluorescence. Probably a good omen...
 

lacina

Shiny_Rock
Joined
Dec 27, 2002
Messages
146
I had the same experience with a stone I sold before the holidays,...
In a years this was the first one of this size I have seen.
It was 1.12ct H/si1. I didn't know what to make of it, the stone had definitely redish flueorescence displaying spectrum of different colors like you say the yellow-orange, hut before I could spent some time to look at it closely it was sold,... The color was "H" but in my opinion the grade was not correct,... Briefly checked under a diamond light it looked like "G". It was a gorgeous diamond and the fluorescence didn't take away from it's beauty. Alltough, in lower colors like "H" I prefer slight blue fluorescence. The Blue does improve the color. The red IMO lowered the apperarance of the color when viewed at daylight...

George
 

DiamondExpert

Brilliant_Rock
Joined
Jan 15, 2003
Messages
1,245
Red fluorescence is not common - the Hope diamond is the best example I can think of.

Personally, I'd rather have a red diamond which fluoresces blue, than a blue diamond which fluoresces red.



Regards,
 

Richard Sherwood

Ideal_Rock
Joined
Sep 25, 2002
Messages
4,924
Holy smokes Gary, I forgot about that! The Hope Diamond flouresces red...

Isn't that weird, as in an exclamation mark on an already unbelievable diamond with an even more unbelievable history?
 
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