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Diamond Fluorescence
Main Index
What is Fluorescence & How it affects Diamond Color
Fluorescence is a quality that makes some diamonds appear to change color when they are exposed to the ultraviolet light that surrounds us every day in sunlight, and also from artificial light produced by fluorescent bulbs.
Diamond grading reports
According to the grading reports, it states whether or not a diamond fluoresces. And if it does, at what intensity- faint, weak, moderate, strong, or very strong. Grading reports also mention the color produced by the fluorescence, usually blue, yellow or white.
The Results
If a yellowish diamond has fluorescence of blue, it could be strong enough to overshadow the yellowish tint. So when you view it in the jewelry store it may give you a faint hue. But you might be surprised by its actual color when you look at the diamond at home under neutral lighting conditions. The same is possible for diamonds that fluoresce yellow. They might appear whiter under incandescent lighting, but acquire a yellowish tint in ultraviolet light.
Most diamonds that fluoresce induce a subtle effect, one that you probably will not identify as a complete color change but just a minor change in tone. However if there are multiple diamonds on a ring it could make the appearance very jarring if some stones fluoresce while the others don’t. They could also fluoresce in different colors and the end result could be unpredictable.
Fluorescence vs. Pricing Issues
Fluorescence affects prices strongly. An obvious yellow fluorescence will brings prices down, sometimes quite a bit, as yellowish tinted diamonds are generally less desirable than whiter stones. A blue fluorescence can help increase the prices of diamonds with yellowish tones. In general white Diamonds are the most preferred.
All said and done, it is important that you eventually like the Diamond you are buying. It could be possible you may actually like the stone with a yellow hue. Or yellow fluorescence. And to your delight they are cheaper than regular diamonds. So it’s important you see all different types of fluorescence and then eventually make a decision. Be more detailed for stones with no grading documentation.
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