what?An Effect ultraviolet (uv)
light has on a diamond
when uv light strikes diamonds with fluorescent properties, the stone emits a glow that is usually blue.
however, it can also reflect shades of green, yellow, white, pink, orange and red.
Fluorescence can occur in different intensities. gemological laboratories rate the fluorescence of each diamond on a scale of none, to Very Strong.
The presence of fluorenscence can enhance the visual appeal of a diamond with a lower colour reting in the J through M range.
Fluorenscence also helps to cancel out any faint yellow visible in a stone, resulting in a colorless appearance.
no colour influence
insignificant colour influence
small colour influence
substantional colour influence
THE FLUORESCENCE EFFECTFluorescence can enhance or detract from the beauty of a diamond. The bluish tint can improve a lower-color diamond (J-M color rated) by cancelling out the faint yellow, resulting in a colorless appearance.
However, in a very high-color diamond (D-F color rated), fluorescence may have the opposite effect.