Apart from the Diamond four C's, one of the most often cited properties of a diamond is fluorescence. Diamond fluorescence, by definition, is the degree to which it gives off a colored hue when exposed to ultraviolet radiation. In some circles, fluorescence is considered an undesirable trait for a diamond. So, some vendors and buyers have lower expectations for the prices of diamonds that exhibit higher levels of fluorescence.
However, this is not a universally standard position. There is an ongoing, heated turn over with regard to what impact a diamond's fluorescence has on its appearance to the naked eye under normal conditions. There is no turn over as to whether fluorescence legitimately exists or not, as a diamond's fluorescence or lack thereof is clearly graphic when the diamond is located under a black light. Obviously, the habitancy in the "fluorescence is bad" camp are of the view that fluorescence has a clear and detrimental succeed upon the appearance of a diamond even when viewed in normal light.
Diamond
Then there are those who take a more nuanced view of fluorescence. Some argue that, although any fluorescence in diamonds with good color ratings is a negative, a small to medium estimate of fluorescence can legitimately enhance the appearance of diamonds with lower color grades. Some also believe that fluorescence can enhance the wide appearance of plainly colored diamonds.
To some, fluorescence itself is an impurity that afflicts some diamonds. In these cases, as with those who plainly believe that fluorescence negatively affects a diamond's appearance, this plainly leads to a allowance in the value of diamonds that exhibit fluorescence, and the more fluorescent a diamond is, the more its value suffers in these circles. One leading voice on the anti-fluorescence side is the respected Rapaport Report, a diamond business publication that is often cited as the standard in diamond valuation.
On the other hand, there is someone else side that posits that fluorescence has legitimately no meaningful impact on the ability or appearance of a diamond, and therefore that fluorescence should not factor into the pricing of a diamond. The basic foundation of this position is the consulation that it isn't legitimately possible to distinguish diamonds of differing fluorescence from one someone else with the naked eye under normal light conditions.
This position appears to be backed up by a greater body of evidence. Most important are the results from a study carried out in 1997 by the Geological produce of America, which found that even individuals complex directly in the diamond trade, together with expert diamond appraisers, were unable to consistently identify or discern differing levels of fluorescence in diamonds.
Even more importantly, ordinary individuals complex in the study were unable to discern any succeed from fluorescence. This legitimately should determine the debate, as it is the consumer's tastes that drive the diamond industry, and it wouldn't make much sense to payment a buyer more money for a singular diamond based on a changeable that has no meaningful effect.
Nevertheless, there are still some vendors who will downgrade the price of diamonds that exhibit higher levels of fluorescence. For consumers, this can narrate a good opportunity. If you're seeing at two diamonds with the same ratings in every category except for fluorescence, and the seller is selling the more fluorescent diamond at a lower price, you essentially have the opening to buy the "same" diamond for less.
brilliant Fluorescence
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