[ FWA ] Diamond Fluorescence

1 Fluorescence Fluorescence indicator refers to the diamond will be issued under the intense ultraviolet blue or pvc additive  yellow and other colored light intensity. This sentence implies what it meant, that is, under natural light , do not feel it , unless relatively strong summer in the ultraviolet sunlight, has a strong fluorescent diamonds, eye feel the presence of fluorescence . In addition to this case , the fluorescence is no impact on the wear . 2 Not all diamonds have a fluorescent , but it is most of the diamonds with a little fluorescence detection of the international diamond is to write out fluorescent indicators , domestic certificate is not particularly marked .
3 fluorescence is not always blue , diamond fluorescence blue, yellow, orange , pink and so on. Diamond fluorescence was weak , the international level from low to high are GIA standards : none ( no ), faint ( weak ), medium blue ( medium blue ) / medium yellow ( medium yellow ), strong blue ( strong blue ) / strong yellow ( strong yellow ) and other levels , or IGI standard : none ( no ), very slight ( very weak ), slight ( weak ), strong ( strong ) and other levels. Provided on each Meggiee this certificate  titanium dioxide anatase have been described in international
4 Although it is a natural fluorescence indicators, but does not affect the value of the diamond . Depends only on the value of the diamond 4C, which is the color, clarity , size and cut . Other indicators only as a reference . Fluorescence selection can be said to be in 4C are in line with the selection criteria , they can not be considered. Have fluorescence or fluorescence intensity depends on personal preference , they do not plastic additive  affect the value of the diamond . The world famous blue diamond - the Hope Diamond (Hope) is a strong fluorescence (Strong Blue) diamonds.
5 The principle of diamond fluorescence under UV irradiation , due to impurities containing a nitrogen atom , ultraviolet energy is absorbed immediately after it at a lower level or longer wavelength re- launch of the phenomenon, we have seen lower energy fluorescent blue fluorescence, it is not radioactive, no radiation, will not have any impact on health .
6 a blue fluorescent diamonds have no fluorescence than the same color grade diamond is even more white some blue  pvc additive light when the fire will be a little more , but it depends on the size of the diamond and the fluorescence intensity . International Certificate of open diamond color is to be deducted out some blue fluorescent whitening score , that is, if two diamonds are F color , one with Strong Blue fluorescence are international institutions with a certificate , then, there is probably a very large diamond fluorescence original color than the other one no fluorescence . However, the opposite fluorescent yellow . Classy use only non-fluorescent diamonds and diamond fluorescence in under fluorescent blue diamond category , on the location of inclusions , there are strict requirements, only the tops of the diamond inclusions can not be selected .