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Pink Fluorescence Mean Anything?

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panda1

Rough_Rock
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Hey Guys,

I was curious if there have been any studies/correlations with the color of fluorescence with any geological events that may have taken place during the course of the formation of a diamond to cause it to be so? For example my diamond''s fluorescence is pink. Does that mean anything? Anyone else with interesting colored fluorescence?
 

kcoursolle

Super_Ideal_Rock
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Jan 21, 2006
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10,589
Date: 2/17/2007 4:32:07 AM
Author:panda1
Hey Guys,

I was curious if there have been any studies/correlations with the color of fluorescence with any geological events that may have taken place during the course of the formation a diamond to cause it to be so? For example my diamond''s fluorescence is pink. Does that mean anything? Anyone else with interesting colored fluorescence?
Sounds beautiful! I''ve never heard of this before!
 

gail013

Shiny_Rock
Joined
Sep 21, 2006
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335
That is really neat. Did you know it had pink fluor. before you bought it?
 

pricescope

Ideal_Rock
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8,266
Date: 2/17/2007 4:32:07 AM
Author:panda1
Hey Guys,

I was curious if there have been any studies/correlations with the color of fluorescence with any geological events that may have taken place during the course of the formation of a diamond to cause it to be so? For example my diamond's fluorescence is pink. Does that mean anything? Anyone else with interesting colored fluorescence?
Hi panda1, lucky you! I don't know anything about mineralogical part of you question, but can explain why fluorescence can be of different colors.

Absorption of a photon (usually UV range from sunlight in the case of diamonds in e-rings) triggers the emission of another photon with a longer wavelength. The emitted light is in the visible range (blue, yellow, pink), particular color depends on the absorbency curve and Stokes shift of the particular diamond.

If anyone is interested i will draw a picture explaining what's going on energy levels because i did not find anything simple enough on the Net.
 

JohnQuixote

Ideal_Rock
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Sep 9, 2004
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5,212
Great photo Panda.

It brings to mind the Hope diamond''s red phosphorescent quality. It glows a strong red color which lasts for several seconds after exposure to short wave UV. It''s a type IIb diamond, containing boron, and they''re semiconductive and usually phosphoresce. If anyone has a better photo of the Hope in its red state I''d enjoy having it to share.


Hope_Phosphor.jpg
 

ladykemma

Ideal_Rock
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Jan 2, 2006
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2,194
so is it a contaminant such as boron which causes fluorescence? blue fluorescence?

if you excite potassium it emits pink. calcium, a pinky orange. sodium bright orange.is this so with diamonds?
 

diagem

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Date: 2/17/2007 12:37:06 PM
Author: ladykemma
so is it a contaminant such as boron which causes fluorescence? blue fluorescence?

if you excite potassium it emits pink. calcium, a pinky orange. sodium bright orange.is this so with diamonds?
No, Boron in Diamonds causes the Bluish color hue...
 

elmo

Brilliant_Rock
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Jun 18, 2003
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1,160
I have seen faint orange-pink fluorescence more than once...more in yellow diamonds but occasionally in colorless. I saw one otherwise nice colorless stone, GIA graded fluorescence none, where this had a visibly detrimental effect on the face up color in daylight. On the other hand, your stone's color looks pretty neat. I've seen it enough that I think it's odd that it's not mentioned more in literature.
 

Fly Girl

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Jan 9, 2007
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Some of my irradiated yellow side stones show strong green fluorescence. It only takes a bit of sunlight to get the effect. Not necessarily pretty, but cool in a way. Something I will watch for in future custom work!

Here near a window looking yellow.

Yellows0106.JPG
 

Fly Girl

Ideal_Rock
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And here in direct sunlight looking rather green.

Greens0108.JPG
 

pricescope

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Date: 2/17/2007 12:37:06 PM
Author: ladykemma
so is it a contaminant such as boron which causes fluorescence? blue fluorescence?

if you excite potassium it emits pink. calcium, a pinky orange. sodium bright orange.is this so with diamonds?
Too much is still in a research stage by now lk, but i would say if we are to talk about color-centers - mostly Nitrogen and it''s different states (for example N-vacation)in diamond lattice are responsible for fluorescence in diamonds, don''t hold me to this, it''s just a gut feeling.

Here is one very good overview in http://en.wikipedia.org/wiki/Crystallographic_defects_in_diamond, showing mostly how much is NOT known at this time.

As for different colors of emitted light - energy (color of light) of a photon emitted depends on sub-structural energy levels (ground - to - excited and how much energy was lost in vibration state there). It is lower than what induced excitement (for example UV), but how much lower - that''s the different colors. Sorry, i''d better make up a picture.
 

panda1

Rough_Rock
Joined
Aug 24, 2006
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To be honest when I purchased this diamond the cert stated there was a slight blue fluorescence, and to my surprise when I placed it under a black light it turned out to be orange/pink. Anyways here's a picture of the diamond under indoor lighting conditions:

panda1diamondmini.jpg
 

Stone Hunter

Ideal_Rock
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WOW really neat. Thanks for the photos. Now when will the online vendors set up their search tools so we can search FOR Fluor? I know I want it and many others do too.

A bonus would be getting something with green or pink fluor.
 

diagem

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Date: 2/18/2007 3:22:37 PM
Author: Stone Hunter
WOW really neat. Thanks for the photos. Now when will the online vendors set up their search tools so we can search FOR Fluor? I know I want it and many others do too.

A bonus would be getting something with green or pink fluor.
Brilliant!!!
 

whatmeworry

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May 23, 2006
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1,095
Date: 2/18/2007 3:25:52 PM
Author: DiaGem

Date: 2/18/2007 3:22:37 PM
Author: Stone Hunter
WOW really neat. Thanks for the photos. Now when will the online vendors set up their search tools so we can search FOR Fluor? I know I want it and many others do too.

A bonus would be getting something with green or pink fluor.
Brilliant!!!
Blue Nile does this on their website. I think you have to add Floro as an additiona/advancedl search option and it shows up as another slider
 

kcoursolle

Super_Ideal_Rock
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What beautiful photos you have of your stone, thank you so much for sharing them. You have such a unique treasure there, it looks gorgeous in day light as welll.
 

panda1

Rough_Rock
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Aug 24, 2006
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Thanks for everyone’s compliments about the stone. My girlfriend is quite taken by it as well. I complete agree with Stone Hunter about fluorescence. Out of curiosity why is it that the GIA doesn't state the color of the fluorescence when in fact they test for it and will most likely experience it first hand anyways? I know that their grading scale from none to very strong is fine and dandy, but seriously why avoid such a noticeable attribute? Since only 35% of gem quality diamonds or so express it as noticeable fluorescence with 97% of those diamonds exhibiting a blue fluorescence and the remaining 3% exhibiting colors of violet, green, yellow, orange, and red (http://www.dsourceva.com/diamonds-fluorescence.htm)… it may be helpful for buyers to identify their own diamond if a question arises as to the possibility of a stone being swapped by unscrupulous individuals… I would imagine that removing fluorescence would be harder than removing say a laser inscribed GIA cert number...Just my two cents…
 

Stone Hunter

Ideal_Rock
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Fluor is part of the diamond and can't be removed. So you are correct it is an easy way to ID your diamond. All you need is a Fluor Black Light.

I thought GIA certs where supposed to state the color of Fluor if different than Blue.

ETA: How about some other stats on that lovely diamond you have and more photos?
 

panda1

Rough_Rock
Joined
Aug 24, 2006
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Stats-
Shape: Oval Modified Brilliant
Measurements: 7.71x5.48x3.06mm
Carat Weight: 1.03
Color: Fancy Light Green/Light Green
Clarity Grade: VVS2
Total Depth: 55.8%
Table Size: 60%
Girdle: Slightly Thick to Extremely Thick, Faceted
Culet: None
Polish: Good
Symmetry: Good
Fluorescence: Faint

Here''s a picture of the diamond under indoor lighting with a splash of light from a Mag-Lite:

greendiamondmini.jpg
 

Miranda

Ideal_Rock
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That is really a beautiful stone, panda! How are you going to set it?
 

panda1

Rough_Rock
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Aug 24, 2006
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My girlfriend likes the half moon setting. So I thought I would try to find fancy light pink half moon side stones. It would be great if the pink side stones'' fluorescence was green...That would make an interesting switch from green center and pink sides to pink center and green sides under backlight...
 

Stone Hunter

Ideal_Rock
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Ah A colored stone with a different colored Fluro. How interesting. Where did you find such a stone?Hope you have someone to source your side stones for you.
 

panda1

Rough_Rock
Joined
Aug 24, 2006
Messages
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Yea, the side stones are going to be rather tough to find considering the half moon shape and matching color at that…hopefully Josh from Amgad can find a pair for me or have them made. We’ll see what happens. I got this green stone from the jewelry district in Downtown LA.
 
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