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 » RockyTalky
»  » Fluorescence in laymans terms please.....
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Fluorescence in laymans terms please..... |
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| P: 10/27/2003 9:24:49 AM | |
ksreynolds74 Rough Rock Total Posts: 10 Last Post: 11/10/2003 Member Since: 10/22/2003 |
Can someone please give a layman's explanation of what fluorescence is and why it is good or bad to have.... Is a stone with Med. Flourescence appealing to the naked eye? Is it noticable to the untrained eye if next to a stone with none?
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| Posted: 10/27/2003 9:24:49 AM | |
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There are 8 replies to this message. There are 8 replies on this page. |
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| P: 10/27/2003 9:41:56 AM | |
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Brian_DC Rough Rock Total Posts: 9 Last Post: 11/7/2003 Member Since: 6/24/2003 |
I had a hard time with this one personally. I could barely see anything in normal circumstances between no fluorescence and Md. fluorescence. In direct sunlight, you can sometime see a little bit of a glow or haze. I personally couldn't tell too much. Also a blacklight will get them to glow a bit. It's a personal preference thing. Although diamonds with fluorescence are priced lower than normal diamonds. As I understand it sometime a fluorescence can make a diamond look milky or cloudy. But a slight blue fluorescence can also make a g-k stone look more "white". My best advice is to go to a local diamond dealer as have them show you actual diamonds and compare the different gradings! Good luck! Brian_DC
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| Posted: 10/27/2003 9:41:56 AM | |
| P: 10/27/2003 10:58:01 AM | |
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robbe Cut Rock Total Posts: 145 Last Post: 4/8/2008 Member Since: 4/24/2003 |
- none, faint, very slight, medium or slight are not disturbing to the eyes and not affecting value.
- strong can at times be slightly disturbing to the eyes but not always, usually affecting value slightly (but in some sunny countries some pay premiums for strong!)
- very strong is usually easily visible, most people dislike very strong, value is slighlty affected.
good luck,robbe
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| Posted: 10/27/2003 10:58:01 AM | |
| P: 10/27/2003 3:39:35 PM | |
Josh@JA Cut Rock Total Posts: 366 Last Post: 2/18/2008 Member Since: 9/11/2003 |
Fluorescence can be a very nice attribute to a diamond. Most often fluorescence can manipulate the appearance of a diamond to make it look whiter to the naked eye. You can also find a diamond at a much more competitive price when it has fluorescence. Very rarely does fluorescence cause a negative impact upon a diamond. However, there are rare circumstances when it can cause a milky or hazy appearance in the diamond. This is generally only the case when there has been a Very Strong rating. Typically, you cannot see any visual difference between a diamond that has fluorescence and a diamond that has a rating of "NONE". However, you can see a "glowing" sensation under a black light or UV/Ultra Violet ray when looking at a diamond with fluorescence. This is what I have found through my experience. 
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| Posted: 10/27/2003 3:39:35 PM | |
| P: 10/27/2003 3:40:36 PM | |
spicolicpa Cut Rock Total Posts: 243 Last Post: 12/1/2003 Member Since: 9/25/2003 |
After being lucky enough to get to see two different 1 ct. stones in G color ; 1 with no floresence and 1 with mild floresence I noted that the G with Mild flo seems a bit icier, not more colorless but....icier....hard to explain. I like the flo! Battle the Obfuscation |
| Posted: 10/27/2003 3:40:36 PM | |
| P: 10/27/2003 8:32:22 PM | |
Gene Rough Rock Total Posts: 12 Last Post: 10/31/2003 Member Since: 1/13/2003 |
i was just at the intergem jewelry show this wkend, and got to looking at some guy's ring designs, when i noticed it -- of the three identical rings, all of which he says were "oh, about G-H and SI" (30 pointers, no certs, clueless seller) when, just like you say, one stood out as icy because it's almost blue-white. I gotta say, while the color was awesome, clean as snow, trying to look into the diamond was harder.. instead of an eventual resolution and finality i usually see when looking deep into a diamond, it started becoming cloudy & milky, exactly as was said here. came back the next day, dragged them all before my blacklight, and the one i suspected just lit up like a piece of radioactive kryptonite, this very light aqua blue. kinda cool when you go clubbing, but i can see how it would get old 
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| Posted: 10/27/2003 8:32:22 PM | |
| P: 10/27/2003 9:01:58 PM | |
diamondsbylauren Ideal Rock Total Posts: 1,128 Last Post: 1/5/2006 Member Since: 10/18/2003 |
Here's an interesting shot. The center diamond is rated Med Blue on the GIA- it's a 4.05 E/SI1 radiant. I had a UVlight on the ring when I took the photo
The two side stones are inert- no fl.
I'll post a photo of the stones together in room light and you really can't see any problem.
There are cases where the diamond is milky- but that's usually with strong blue stones.
In many cases the fluorecence is an attribute- making the diamond look better. This is especially true in stones of H-I-J-K-L-M colors. Many times a J with stong blue looksquite liike an H
Sorry wrong photo- I'm still getting the hang of things over here- see the next post  David |
| Posted: 10/27/2003 9:01:58 PM | |
| P: 10/27/2003 9:05:34 PM | |
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diamondsbylauren Ideal Rock Total Posts: 1,128 Last Post: 1/5/2006 Member Since: 10/18/2003 |
 David |
| Posted: 10/27/2003 9:05:34 PM | |
| P: 10/27/2003 9:06:54 PM | |
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diamondsbylauren Ideal Rock Total Posts: 1,128 Last Post: 1/5/2006 Member Since: 10/18/2003 |
Here are the stones in room light  David |
| Posted: 10/27/2003 9:06:54 PM | |
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