Worths Diamonds

Fluorescence is a form of lumination created when a diamond is exposed to low or high wave ultraviolet radiation. Some degree of fluorescence occurs in nearly half the diamonds in the world. Faint or medium fluorescence rarely affects the diamond's appearance and it's usually invisible to the human eye in ordinary light unless the fluorescence is certified Very Strong or Extremely Strong. Diamonds with no fluorescence or faint to moderate fluorescence are preferable.

Diamonds with strong fluorescence in colour grades lower than the grade of H will often face up about one colour grade better than a non-fluorescent diamond. Strong fluorescence can actually improve the appearance of diamonds that have traces of colour. Diamonds with strong fluorescence in colourless to very near colourless grades D to G sometimes exhibit a noticeable luminescence which can make the diamond appear hazy. A strong or extremely fluorescent diamond can usually be purchased for less than a diamond with moderate or lower fluorescence. Listed below are abbreviations for strength of fluorescence with their meanings