Diamonds & Engagement
Fine Jewelry
What Is Diamond Fluorescence?
Some quality diamonds display a visible light when they are exposed to ultraviolet light. This light is known as fluorescence. Under most lighting conditions, a diamond's fluorescence is not visible to the naked eye. However, it will release a soft colored glow if held under an ultraviolet lamp. Fluorescence is a naturally occurring phenomenon that appears in certain minerals and gems.
Do All Diamond Fluoresce?
Not all diamond fluoresce. If a specific diamond doesn't, the grading report will list the diamond's fluorescence as either inert or none.
What Are The Different Types of Diamond Fluorescence?
The degree of fluorescence varies from faint to medium to strong to very strong. Faint means that the stone has a slight glow that is difficult to see under ultraviolet light. Very strong means the diamond emits a deep glow that is very clear under ultraviolet light. The color of the fluorescence can also vary, although blue is the most common color. Yellow, green and white are other colors that a Fluorescent diamond can release.
How Does Fluorescence Affect A Diamond?
Fluorescence usually has no effect on a diamond's appearance in regular light conditions. In some cases strong blue fluorescence can make a yellow colored diamond appear whiter, but in rare cases it can cause a stone to appear milky or oily.
Diamond Fluorescence Guide
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