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Very Strong Green Fluorescence.

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mdx

mdx

Brilliant_Rock
Joined
Mar 1, 2002
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570
While grading a parcel of stones for stock this green fluorescence diamond lit up light a Christmas tree under the UV lamp.
Thought I would share it with you guys.
Not a wonderful image but the green can be compared with the strong blue one in the back row.
The diamond shows no sighs of oiliness in sunlight.

Johan

Green Flourescence.jpg
 
that's awesome & wild.... what size/color is that stone....?

also.... on the back row, would the fluor. be something like:
neg, faint, faint, neg., med, strong, neg

?

Just curious as I've started looking at a strong blue fluor stone....

Thanks.
 
Cool!
loopy.gif
 
Very cool, thanks for posting! Does the green floursence have any impact on how the stone looks?
 
Thats really cool never seen anthing that bright what did it face up as color wise? waaht do you call it a over green?
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Neat, I have seen blue and yellow fluorescence, and have read that the Hope Diamond fluoresces red, but never have seen green.

Can someone explain why this occurs?
 
Wow, that is VERY cool!
 
I had to delurk for this one, maybe it's my Vegas Girl roots but I love things that glow green like that diamond! It's high on my list of "needs" after we get settled in our new home next month.

Here's one I love too.
love.gif

http://www.amnh.org/exhibitions/diamonds/fluorescence.html
 
To my eye the stone in the front row exhibits strong BLUE flourecence, while the ones on the back row that are glowing would be Medium blue. The ones NOT showing any affect would be inert ( no fl)


48c.JPG


Shown above is a Fancy Brown Yellow with a very strong green fl.
 
Oh, I'm gonna be dreaming about green diamonds tonight...and I already have a bad case of insomnia!

David does that one glow green as well? I remember you had a very small similar stone that was more greenish yellow than that for not very much money last year, I assume it's found a home long before now.
 
would it just be the tint of the stone (L+ color?) or the fluor (there has to be different 'tints' of blue fluor, right?) then (lauren?) if the one in the front is in fact a strong-blue?

Is it possible that this stone is both medium fluor yellow and medium fluor blue?
 
Whoa, that is WILD! and, um, that definitely looks green to me -David, are we looking at the same stone?!
confused.gif


I've seen a yellow fluorescent stone under the UV light, and it seemed to face up yellower than it should have for its color grade, I'd love to see a non-UV pic of that green one!

Thanks for sharing, mighty cool
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On 7/23/2004 10:44:32 PM wanderlost wrote:

would it just be the tint of the stone (L+ color?) or the fluor (there has to be different 'tints' of blue fluor, right?) then (lauren?) if the one in the front is in fact a strong-blue?

Is it possible that this stone is both medium fluor yellow and medium fluor blue?----------------
Click to expand...


Good question - do yellow and blue make green?
 
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On 7/23/2004 11:07:12 PM Rank Amateur wrote:

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Good question - do yellow and blue make green?


----------------
Click to expand...


I'm going on my vague memory of art classes and computer monitors, but I believe that yellow and blue do in fact make green IF you are dealing with pigments. For example, yellow paint + blue paint = green paint. However, when you're dealing with light you're dealing with basic colours of red/green/blue instead, so no, yellow + blue doesn't make green in this context. Pigment is additive, light is subtractive -- when you add more colours to paint, you get closer to black (or a nasty muddy brown), but when you add more colours to light, you get closer to white.
Click to expand...
 
Wonderlost wrote
That's awesome & wild.... what size/color is that stone....?

also.... on the back row, would the fluor. be something like:
neg, faint, faint, neg., med, strong, neg

?

Just curious as I've started looking at a strong blue fluor stone....

Thanks.
------------------------------------------------------------------------------------------
Wonderlost
The diamond parcel was 0.50ct to 0.69ct F to G color and vs clarity.
The green fluorescing stone has a body color of “F”
The stones on the back row are Medium blue and strong blue as graded against the CIBJO master stones.

Lop wrote
Very cool, thanks for posting! Does the green floursence have any impact on how the stone looks?
----------------------------------------------------------
Lop
No, the green fluorescence has no visible effect on this diamond. Deep internal inspection on the diamond shows no signs of a cloud (sometimes associated with yellow Fluorescence and sometimes thought to be sodium)
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Diamondsbylauren wrote
To my eye the stone in the front row exhibits strong BLUE flourecence, while the ones on the back row that are glowing would be Medium blue. The ones NOT showing any affect would be inert ( no fl)
----------------------------------------------------------
David
The color is a true green, It was induced by subjecting the diamond to longwave UV at a wavelength of 366 nm. Body color of the diamond is “F”
Here is a larger image.
Johan

Green Flourescence2.jpg
 
chialea....
right on... my mistake.


Johan... I'm assuming the purple (and white) areas are actually reflection of the source (or a maxing out of your camera?)
 
Wonderlost
Yes the purple is a reflexion of the UV tube
Lop
That’s an interesting observation, I may send the stone to DCLA (Diamond Certification Laboratory of Australia) to check it out for HPHT. (they have the latest testing devise developed by De Beers)
If it turned out to be treated could be embarrassing for the supplier as they are De Beers sightholders.
Will let you know
Johan
 
That is an interesting looking stone. How does it face up out of doors on a bright sunny day?

Wink
 
Yes Johan I was wondering about HPHT too. Keep me informed please.

There are some amazing treated fluoro greens on the market - great novelty stones.
One of my apprentices, Clinton Hosking, just made a piece for the aussie design awards - a sphere with half a doz set all around. Inside are UV leds so the stones fluoresce vivd green when worn in dim lighting. Unfortunately he did not get nominated as a finalist (2 of our other entry's are
appl.gif
) - he was devastated - he won both design award and apprentice of the year in the last awards 2 years ago!
 
Someday when I'm quite a bit richer than I am now, I'm going to have a bracelet made that's plain pave in normal light, but under a blacklight spells out my name or a message or a beautiful pattern or something.

Does anybody do that? Make patterns that are visible only under black lights?
 
Way cool, join the club....never seen a green one though!
 
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Does anybody do that? Make patterns that are visible
only under black lights?
-----------

Glitterata, I've always thought that would be a cool way to market a different niche of diamond jewelry.

I don't know of anybody doing it presently, but Faberge created a box for the Czar Nicholas that under a black light displayed a gorgeous pattern.
 
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On 7/24/2004 9:05:48 PM Richard Sherwood wrote:

-----------
Does anybody do that? Make patterns that are visible
only under black lights?
-----------

Glitterata, I've always thought that would be a cool way to market a different niche of diamond jewelry.

I don't know of anybody doing it presently, but Faberge created a box for the Czar Nicholas that under a black light displayed a gorgeous pattern.

----------------
Click to expand...


Everything old becomes new again!
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Kewl Pics, MDX!!
1.gif
 
----------------
On 7/24/2004 9:05:48 PM Richard Sherwood wrote:

-----------
Does anybody do that? Make patterns that are visible
only under black lights?
-----------

Glitterata, I've always thought that would be a cool way to market a different niche of diamond jewelry.

I don't know of anybody doing it presently, but Faberge created a box for the Czar Nicholas that under a black light displayed a gorgeous pattern.

----------------
Click to expand...


Richard
I remember in a previous post you demonstrated a multi-stone broach or was it a pendent where about 30% on the stones where fluorescent. Maybe you can find it again

Johan
 
I'll have to search a bit to find the originals, but I've got pictures of that brooch on my website. It was a large Edwardian brooch (50 cts) circa 1915, and the center stone had yellow fluorescence. The fluorescent colors came out a bit dimmer on the website for some reason.

http://www.sarasotagemlab.com/articles.htm

I'll see if I can locate the originals in my computer records.
 
The diamond came back from the Lab today, The DTC Diamondsure tester confirmed no treatment but prompted for a thermal probe test. Thermal probe confirmed a natural diamond.
Careful microscopic inspection seems to indicate that the green fluorescence is coming from microscopic bubbles in the stone. Not the micro solid inclusions that is usually associated with clouds. These bubbles could be just air bubbles or perhaps some form of fluorescing gas.
Johan
 
If I remember correctly... aren't small green 'microbubbles' usually associated with irradiated diamonds (as mentioned in the following post):
Green Diamonds

The thing is.... I don't ever remember hearing that these would fluor. or phosphor. any color....

curiouser and curiouser...
 
That is really neat. Makes me want one of each now!!
 
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