That is what it comes down to.I'll let my own eyes be the guide.
Garry,Lets show you Bryan.
To dispel the argument that UV light that causes color whitening in blue fluorescent diamonds does not pass through windows.
This bathroom door is 10mm thick or 0.4 inches! Much thicker than normal windows and probably about the same as many double glazed windows.
The center diamond is GIA Medium Blue. Clearly the diamonds are fluorescing.
What is more, the long wave frequency used for grading fluorescence has around half the effect as these simple cheap torches which work in the near visible range.
It is for this reason that earlier tests (with the wrong light meters) are totally irrelevant. This simple test shows that very long wave UV that is in the just or near visible range does pass through windows.
Bryan, Thankfully, the subject at hand is by no means at serious as all the other stuff folks seem to be arguing about these days...so please don't mistake my natural NY'er skeptisism/aggressive responses as anything but aimed at lively discussion. Based on reading your posts over the years, it's clear that you and I agree on so many more important aspects.The fact remains that intensity diminishes rapidly with distance from the source.
I agree. There definitely seems to be a list for both pros and cons. (I had a medium fluor F, and I didn't notice the fluor. But I passed on fluor the second time around for different reasons.) If there was a list of both, people could evaluate for themselves and figure out what works for them in their specific situation. For example, a person who is indoors without sunlight 70% of their lives may make a different choice from someone who is outdoors 70% of their days. Some people who prioritize resale value on the market at large may choose something different from someone who never intends on selling. Different people, different priorities.Because color is so subjective, I would assume the same is true for the effects of fluorescence.
Debate away gentlemen. While I find the topic and discussion very interesting, I'll let my own eyes be the guide.
"Real life".....interesting choice of words.What I did say is that if a diamond has a transparency issue caused solely by fluorescence, if you take that stone away from light rich in UV/VV intense enough to activate the fluourescent effect, it will become transparent. Which is most real life lighting environments.