In fact, the results support the age-old belief that strong or even very strong blue fluorescence can improve appearance rather than detract from it, especially in diamonds with faint yellow body color . . . While the apparent benefits of blue fluorescence are less obvious in colorless to very near-colorless diamonds, they still were evident in the study. This should bring into question the trade's lower bid prices for moderate to highly fluorescent diamonds in the better colors.
That may be a satiric narrative but the subject is dead serious. Blood diamonds are used to fund wars and other brutal activities in certain parts of the world. Diamonds sold in this illicit trade promote violence and kill people; you want to make sure that your own non conflict diamonds.
The following is excerpted from the Federal Trade Commission's "Guides for the Jewelry, Precious Metals, and Pewter Industries" Misuse of the term "blue white."
It is unfair or deceptive to use the term "blue white" or any representation of similar meaning to describe any diamond that under normal, north daylight or its equivalent shows any color or any trace of any color other than blue or bluish. Unfortunately, it had the unintended effect of casting suspicion over any diamonds with fluorescence.
The bottom line about fluorescence A D-colored diamond (the highest color) with very strong fluorescence may display a "haze" or "cloudiness" that detracts from the overall luster of the stone. However, diamonds exhibiting fluorescence especially those diamonds with lower colors like I or J may seem more white and give the appearance of being G-color or H-color diamonds. Since the diamond trade still undervalues diamonds with any fluorescence in the colorless color-grades (D through F), customers may obtain a diamond at a relative bargain when buying one with faint or even medium fluorescence. For excellent value in a diamond with no noticeable color to the unaided eye, look for near-colorless grades of G-color through J-color, and a fluorescence grade of medium or strong blue.
That may be a satiric narrative but the subject is dead serious. Blood diamonds are used to fund wars and other brutal activities in certain parts of the world. Diamonds sold in this illicit trade promote violence and kill people; you want to make sure that your own non conflict diamonds.
The following is excerpted from the Federal Trade Commission's "Guides for the Jewelry, Precious Metals, and Pewter Industries" Misuse of the term "blue white."
It is unfair or deceptive to use the term "blue white" or any representation of similar meaning to describe any diamond that under normal, north daylight or its equivalent shows any color or any trace of any color other than blue or bluish. Unfortunately, it had the unintended effect of casting suspicion over any diamonds with fluorescence.
The bottom line about fluorescence A D-colored diamond (the highest color) with very strong fluorescence may display a "haze" or "cloudiness" that detracts from the overall luster of the stone. However, diamonds exhibiting fluorescence especially those diamonds with lower colors like I or J may seem more white and give the appearance of being G-color or H-color diamonds. Since the diamond trade still undervalues diamonds with any fluorescence in the colorless color-grades (D through F), customers may obtain a diamond at a relative bargain when buying one with faint or even medium fluorescence. For excellent value in a diamond with no noticeable color to the unaided eye, look for near-colorless grades of G-color through J-color, and a fluorescence grade of medium or strong blue.
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