What is fluorescence in diamonds?

Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. Fluorescence in diamonds is the visible light some diamonds emit when they are put under UV (Ultraviolet) rays. As listed on GIA certificates, fluorescence refers to the intensity, or strength, of the diamonds reaction to the long wave Ultraviolet light.

Is Fluorescence common?

To put it simply, Yes. Of all the diamonds that have been submitted to GIA (Gemmological Institute of America) 25% to 35% of them have some level of fluorescence.

What effect does fluorescence have on how my diamond looks?

GIA studies have shown that for the overwhelming majority of diamonds, the strength of fluorescence has no noticeable effect on appearance. Less than 0.2% of diamonds with extremely strong fluorescence exhibit a hazy or oily look.

Are diamonds weaker if they have fluorescence?

No. A diamond with fluorescence is as strong as one that does not contain fluorescence.

We hope you find this article useful. At Australian Diamond Brokers, we have expert diamond graders onsite who can answer all your questions about diamonds and buying diamonds. You can contact us by email, phoning in or visit us at our store without fear of being forced to buy anything.