Diamonds fluoresce in every color of the rainbow. This effect in itself can make a diamond’s characteristic truly special and appealing in the eyes of collectors and regular consumers as well.
Since the strength of fluorescence can change the overall appearance of a stone, GIA has included the fluorescence aspect in a grading report. There are basically 5 different levels to differentiate diamonds with various degrees of this phenomenon. It can range from “none”, “faint”, “medium”, “strong” to “very strong”.
Did you know that the fluorescence entry on a grading report is a description and not a grade? In order to determine the degree of fluorescence, the gemologist subjects the diamond to longwave UV radiation.
Diamonds that don’t glow will be classified as “None”. If the stone does, the gemologist will then proceed to describe the phenomenon.
Here’s a GIA graded 0.29 fancy intense green yellow oval shaped diamond (report number: 51111269490). It glows in a delightful strong green fluorescence under UV lightings.
Photography Credits: Tanojewelry
And in the example here is an array of stones in a black box. The diamond on the far left is used as a control group diamond. It doesn’t have fluorescent properties and stays dark in black lighting.
On the far right, the diamond shows a ghostly white colored glow in UV radiation. To its left, we have a strong yellow fluorescence that helps to complement the default yellow color of the diamond.
What about orange colored fluorescence? Have you seen these types of fluorescence before? The 3rd and 4th diamonds from the left glowing in orange and pink are enough to make a grown man cry. Well, at least for a diamond collector.
Having seen these examples, which of them is your favorite one and why? Feel free to leave a comment as we would definitely like to hear our reader’s thoughts on these. Next up, did you know that diamonds can fluoresce in multi-colors too?