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Author Topic: Cool Color Comparison photos. Can you see the subtle shade differences?  (Read 3980 times)
oldmancoyote
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« Reply #25 on: May 25, 2011, 09:22:50 AM »
Quote from: Trinkette on May 25, 2011, 09:04:00 AM
Since there is a RANGE of color intensity within each color grade, it COULD be that fluorescing R4018 would still be more intense in color (within the FY color grade) than non-fluorescing R4014, even if fluorescence were not present in R4018... correct? In other words, R4018 is closer to the FLY-end of the FY-range, whereas R4014 is closer to the FIY-end of the range.

In fact, I am thinking that it MUST be in this case since, the fluorescence in R4018 is medium blue – and blue and yellow are opposites on the color wheel – the medium blue fluorescence should cancel-out some of the yellow color in the stone. If it were a yellow fluorescence, I would expect the yellow color of the diamond to deepen... however, not so with the blue. It would be interesting to see a comparison of these two stones in natural sunlight.

I am intrigued to hear that GIA may grade a bit tighter on stones with fluorescence. As long as they are consistent...  dontknow

Methinks you got a 4 and an 8 mixed in the first paragraph...
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GIAGirl
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« Reply #26 on: May 25, 2011, 09:26:42 AM »
Quote from: oldmancoyote on May 25, 2011, 07:32:36 AM
Well, F...ancy Yellow me! On my work computer the W-X looks nearly white. And there is next to no difference in the two FY. On my home computer (I'm working at home today, so I can get them side by side, and before the snide remarks, this is my lunch break!) there is a definite difference between the MBF and the inert FY, with the fluorescent stone clearly showing more colour.

I think it's an unavoidable result of the fact that the grading light is NOT UV free.

The W-X shows more tint on the "home" PC too. Lenovo 1 - HP 0

What he said.  Grin
 I think it is important to point out that David has said in the past that there are not that many yellow emerald cuts period!  The facets shorten the light wave lengths and produce more yellow color.  This makes it more advantageous to cut the fancy cuts with MORE facets.  That is why that FY emerald cut is a rare bird indeed....but W-X emerald cut is pretty rare too.  Don't be ugly to her.  
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http://www.the3day.o...sonal&fr_id=1181
ah2bqat
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« Reply #27 on: May 25, 2011, 12:35:38 PM »
My little notebook isn't showing a difference between the FY radiants, either; but I have to blame my eyes for not picking up the color grade differences in the first series, exept for the D, which does stand out rather blatantly.

As for Miss W-X,  let her sit on an 18kt yellow gold throne and then tell us what you think of her.  Not quite fair to compare her with a beauty recently back from the uber-factory.  I think she's divine.
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Auntie Dammit Heart DBL!
clgwli
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« Reply #28 on: May 25, 2011, 02:10:13 PM »
Now that I am on my tablet, I cannot really see any difference at all between the two stones (inert and MB fluor).  Maybe just  hint but not enough to make a real difference.  They, on this screen, both look like they are just a slightly different level of the same range.  The difference is way more apparent on my HD/amazing quality screen.
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Elaine aka Squiggly
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« Reply #29 on: May 25, 2011, 03:43:00 PM »
Quote from: Trinkette on May 25, 2011, 09:04:00 AM
Since there is a RANGE of color intensity within each color grade, it COULD be that fluorescing R4018 would still be more intense in color (within the FY color grade) than non-fluorescing R4014, even if fluorescence were not present in R4018... correct? In other words, R4018 is closer to the FLY-end of the FY-range, whereas R4014 is closer to the FIY-end of the range.

In fact, I am thinking that it MUST be in this case since, the fluorescence in R4018 is medium blue – and blue and yellow are opposites on the color wheel – the medium blue fluorescence should cancel-out some of the yellow color in the stone. If it were a yellow fluorescence, I would expect the yellow color of the diamond to deepen... however, not so with the blue. It would be interesting to see a comparison of these two stones in natural sunlight.

I am intrigued to hear that GIA may grade a bit tighter on stones with fluorescence. As long as they are consistent...  dontknow

Yeah, what she said.  There's a RANGE within that color group. icon_salut
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