Do your diamonds do this: turn dark purple in direct light/flash?
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I don't know much about diamonds, but have a guess as to the reason we're seeing this. Are the cuts on your diamond perfectly symmetrical and even? The slightest difference in angles can refract light to a different hue within the spectrum. Any non-symmetry would explain why you only see this purple hue when photoing. Perfectly symmetrical objects reflect pure white, rather than breaking the white into colors. Realistically, perfect symmetry is extremely hard to achieve with prisms/crystal, and is probably the same with diamonds. I've heard of something called the "flash effect" used loosely, and think we might be seeing a residual effect of it.
And I think the reason we can rule out fluorescence is because UV light will cause the entire diamond to "glow". This is both due to its mineral properties, as well as the characteristics of UV rays. Flash photography does not have the same characteristics, which is why the purple hue is only seen from variations of the one angle.
Gosh, I didn't mean to type so much...I hope this helps.
And I think the reason we can rule out fluorescence is because UV light will cause the entire diamond to "glow". This is both due to its mineral properties, as well as the characteristics of UV rays. Flash photography does not have the same characteristics, which is why the purple hue is only seen from variations of the one angle.
Gosh, I didn't mean to type so much...I hope this helps.
You know what, I found out if I put the diamond in a setting (it was unset in a tension clasp) it no longer has the problem albeit it turns dark when under direct sun light. I don't think posting the AGS report will help at all. If they want to fake a diamond, why wouldn't they fake a lab report? I mean, why should we trust Blue Nile, James Allen or any jeweler at all?
Turning dark under sunlight is normal for a well cut stone, it's a misfire phenomenon, and it's not exactly that it's really turning dark, it's more than your human eye cannot process the amount of "feedback" (light) it's getting back from the stone so your "aperture" closes down a little, resulting in a darker looking stone.
This is not a synthetic stone. Natural diamonds do this frequently, even those with little to no fluorescence, and someone in the trade should know that.
A color enhanced or clarity enhanced stone can do this. I'm not saying yours is! But it might be something to consider. It's called the flash effect.
http://noelr.hubpages.com/hub/How-To-Recognize-Treated-Diamonds
http://noelr.hubpages.com/hub/How-To-Recognize-Treated-Diamonds
Hmm... That's an interesting read. Thanks for the info. I really doubt that it's a color enhanced diamond. I did loupe the diamond closely and did not see anything out of ordinary (no purple flashes) and everything matches the plot. If the diamond is treated in any way, a public company is going to face an expensive lawsuit!
Hmm... talking about a colored diamond, I would LOVE to get my hands on a light pink one....yum
Hmm... talking about a colored diamond, I would LOVE to get my hands on a light pink one....yum
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ullhair: I *really* hate the misinformation people are giving you, OP. This stone is not enhanced, and you have nothing to worry about. What's happening with your stone is NORMAL and not a result of "enhancement" or your stone being fake or a CZ or anything of the sort. It's part of the natural refraction that happens sometimes when you take a flash photograph of a diamond, which has a prismatic effect on light.
The "flash effect" of a clarity enhancement is not the same as shown, and any enhancement would have been noted on your report very clearly, and would be visible to you anyway with a loupe. Further, the vendor you purchased from would've made it clear from the start that you bought an enhanced stone, and this vendor is reputable so I have no concerns at all that you were in any way misguided.
My first thought was fluorescents and my next thought was that it might be fracture-filled. On the appraisal, did it mention anything about enhancements? I have seen some diamonds that look like they have a galaxy inside of them because they have been fracture filled - beautiful reds and blues. I'm not sure how they'd react to a flash.
If your appraisal says nothing about either of these things, I say get it appraised by a new lab, because what's happening is more than a little unusual and if you purchased a stone with any undisclosed 'flaws' (I hate that word because I think fluorescents can make a stone more beautiful and is actually a rare occurrence) I'd be more than a little upset.
If your appraisal says nothing about either of these things, I say get it appraised by a new lab, because what's happening is more than a little unusual and if you purchased a stone with any undisclosed 'flaws' (I hate that word because I think fluorescents can make a stone more beautiful and is actually a rare occurrence) I'd be more than a little upset.
I am surprised that a lot of people never heard of AGS. It's as good as GIA if not better and focus more on the Cuts of the diamond. If you buy a H&A diamond, chances are it will come with an AGS certificate instead of GIA. Labs like GIA/AGS do Not grade enhanced diamonds. I would never buy a diamond comes only with an appraisal, would you?
The diamond is currently being set, but I will get it appraised by either David Wolf or Barry Block for insurance purpose after it's done.
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