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Documenting Yellow Fluorescence

Discussion in 'RockyTalky' started by Rockdiamond, Sep 11, 2019 at 1:13 PM.

  1. Rockdiamond
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    by Rockdiamond » Sep 11, 2019 at 1:13 PM
    HI All!
    There's so much discussion about fluorescence. IMO it's one of the biggest "wildcards" about assessing a diamond.
    Yellow diamonds with blue fluorescence are heavily discounted due to the fact that a percentage of fl diamonds are hazy. Also, blue and yellow are kind of opposite in terms of color- so some fluorescent yellow diamonds' color is not as pure as an inert diamond.
    But sometimes there are no ill effects, and the discount is not justified.
    I recently shot a video showing how a yellow diamond turns blue under a UV lamp- IMO, the fluorescent diamond in the video is one that does not suffer ill effects of fluorescence. But it clearly changes color!


     
    


    


  2. Demon
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    by Demon » Sep 11, 2019 at 1:24 PM
    Very cool! i just love fluorescence and phosphorescence. Luckily I have had one yet where the fluorescence impacted the diamond negatively.
     
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  3. Karl_K
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    by Karl_K » Sep 11, 2019 at 1:46 PM
    What do they look like in full daylight next to each other?
    Is it enough UV to activate the blue in the diamond to a large degree or only under a UV lamp?
     
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  4. OoohShiny
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    by OoohShiny » Sep 11, 2019 at 3:16 PM
    Excellent video and a cool stone, thank you for posting!
     
    


    


  5. Rockdiamond
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    by Rockdiamond » Sep 11, 2019 at 4:05 PM
    Great question old friend!!
    The video was taken in natural lighting- near an open window. Theres sufficient UV in the lighting to activate fluorescence- iow if the stones color would visibly change, it would have
     
  6. cflutist
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    by cflutist » Sep 11, 2019 at 5:58 PM
    Some of my FIY rounds in a bracelet fluorescing yellow. 20141112_193925.jpg

    sm outdoors overcast IMG_7690.jpg
     
  7. TreeScientist
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    by TreeScientist » Sep 12, 2019 at 4:51 AM
    Great video @Rockdiamond! I love diamonds that exhibit unique (non blue) fluorescence. Here's a photo of a melee stone at the bottom of my wife's pendant with green fluor.

     
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