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The most frequent color of fluorescence in diamonds is blue, but it occurs in many other colors. [7] Fluorescence may be exhibited at both short-wave and long-wave UV. The strength of fluorescence also varies from slight to high. The value of a diamond may be affected by the presence and strength of fluorescence in a diamond.
Of the 35% that did fluoresce, 97% had blue fluorescence of which 38% had faint blue fluorescence and 62% had fluorescence that ranged from medium to very strong blue. Other colors diamonds can fluoresce are green, yellow, and red, but are very rare and are sometimes a combination of the colors such as blue-green or orange. In October 2020, a ...
Some natural type IIb diamonds phosphoresce blue after exposure to short-wave ultraviolet. In natural diamonds, fluorescence under X-rays is generally bluish-white, yellowish or greenish. Some diamonds, particularly Canadian diamonds, show no fluorescence. [19] [22] The origin of the luminescence colors is often unclear and not unique.
GIA (2007)"A Contribution to the Understanding of Blue Fluorescence on the Appearance of Diamonds". Retrieved July 9, 2008. About.com By Carly Wickell Diamond Inclusions Archived 2008-05-17 at the Wayback Machine Accessed July 9, 2008.
It is claimed that "the symmetry of the cut is so precise that it can be balanced on its culet" [1] It is a rare type IIa diamond, meaning that it contains no nitrogen or boron. It is likely D or E color ("colourless"), with a trace of pink, and has blue fluorescence. [1] [2]
The Ocean Dream is a diamond, measuring 5.51 carats (1.102 g), and rated in color as Fancy Deep Blue-Green by the Gemological Institute of America. [1] The Ocean Dream is the first and one of the only natural diamonds known to the GIA to possess a blue-green hue (besides the Ocean Paradise Diamond owned by the Nahshonov Group, found in Brazil in 2012), making it one of the rarest diamonds in ...
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