What Is Diamond Fluorescence?

Fluorescence is a naturally occurring phenomenon that appears in certain minerals and gems. 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, although the diamond will exhibit a soft colored glow if held under an ultraviolet lamp.

Do All Diamond Fluoresce?

Not all diamond fluoresce. If a specific diamond does not fluoresce, 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 that 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 may exhibit.

How Does Fluorescence Affect A Diamond?

Fluorescence usually has no effect on a diamond's appearance in regular lighting conditions. In some cases, however, a strong blue fluorescence can make a yellow colored diamond appear whiter. In rare cases, it can or cause a stone to appear milky or oily.

page load - render : 250.0051 ,snapshot:187.4988, page load end:187.4988 page load - stats :187.4988 total:93.7478 miniVer : 0 SPProcessor2 : 0 spp.GetPageXml() : 93.7478 jTrans : 93.7478 xnlRef : 93.7478 xnl n0 Transform: 62.4953 xnl n0 : 156.2431 xnl n1 : 156.2431 xnl n2 : 156.2431 xnl n3 Transform: 15.6256 xnl n3 : 171.8687 xnl n4 Transform: 0 xnl n4 : 171.8687 xnl n5 Transform: 15.6301 xnl n5 : 187.4988 xnl loop : 187.4988 template:1,#BodyContainer processTime:0 template:1185.51,header processTime:62.5099 template:1185.52,footer processTime:15.6144 template:118,#WidePane processTime:15.6235 template:142,#educationLeft processTime:0 template:117,#educationMain processTime:0