Diamond Fluorescence Gia Scale

To reduce the possibility with clarity does not carry very strong fluorescence graded diamonds.

Diamond fluorescence gia scale.

None faint medium strong and very strong. Please note that fluorescence seems to visually impact the diamond in about 1 or less of all cases. Fluorescence is an invisible glow that a diamond emits under uv rays. Diamond fluorescence influences a diamond s color grade fact.

None faint medium strong and very strong. Of all the diamonds submitted to gia for grading approximately 25 to 35 show some. According to gia fluorescence is the effect that ultraviolet uv light has on a diamond. Diamond fluorescence is graded on a scale established by gia.

In the table up position diamonds of strong or very strong fluorescence appeared to have better color than less fluorescent stones. Gia diamond grading reports and diamond dossiers describe a diamond s fluorescence by its intensity none faint medium strong and very strong when compared to masterstones used in the lab. On a gia diamond grading report fluorescence refers to the strength or intensity of the diamond s reaction to long wave uv which is an essential component of daylight. The light emitted lasts as long as the diamond is exposed to the ultraviolet source.

The gia found that 25 to 35 percent of diamonds have some degree of fluorescence. However the way you perceive a diamond s color grade may be affected by the extent to. While there are many false and misinformed opinions on whether the presence of fluorescence in a loose diamond is good or bad it s best to consider the gia s in depth long running scientific study of fluorescence. On a gia diamond grading report fluorescence refers to the strength or intensity of the diamond s reaction to long wave uv which is an essential component of daylight.

A gia study of diamond fluorescence. Gia scale uses the following grades to identify fluorescence. The agsl used to use the grading term inert in addition to none but now they combined the two terms under a negligible fluorescence grade. A study performed in 1997 by the gia found that the level of fluorescence has no widely perceptible effect on the color appearance or transparency of diamonds when viewed table down upside down.

It is not a grading factor like the gia 4cs color clarity cut and carat weight. Gia studies show that for the overwhelming majority of diamonds the strength of fluorescence has no widely noticeable effect on appearance. Gia considers diamond fluorescence an identifying characteristic. What is the grading scale for diamond fluorescence.

Fluorescence is the visible light some diamonds emit when they are exposed to invisible ultraviolet uv rays. It delineates how much strength the diamond has against the long wave uv light.