Have you ever wondered why diamonds glow under black light? It's a phenomenon known as fluorescence, and it's caused by the presence of certain chemical impurities within the diamond composition. Approximately 30% of diamonds contain a certain level of boron, which causes them to emit a brilliant light when exposed to ultraviolet rays. The level of boron present in the diamond determines the amount of light the diamond will emit when it is exposed. When a diamond is exposed to ultraviolet light (also known as black light), it glows blue.
Sometimes you may see another color, such as yellow, green, red, white, but blue is the most common fluorescent color in a diamond. It is due to a phenomenon called fluorescence present in diamonds that causes diamonds to glow in different shades of blue, purple, green and sometimes even red and yellow under ultraviolet light. Fluorescence occurs when a diamond shows a soft glow under ultraviolet (UV) light. This is caused by certain minerals in the diamond.
This effect is completely natural and appears in one third of all diamonds. The brilliance and brilliance of the diamond is determined by the quality of its cut and not by its ability to shine with ultraviolet light. Not all diamonds fluoresce, some are fluorescence-free and are called “None” in the GIA diamond report. Blue fluorescence can help a diamond look whiter by counteracting the yellowish tint that a diamond has and can improve face up vision to half or a higher degree.
Depending on the specific recipe and the alloys used in the cultivation process, laboratory diamonds may show rarer fluorescence colors, such as yellow-orange or white, compared to natural diamonds. The fact is that when photons from UV sources hit the diamond, the impurities found in the diamond will cause it to emit the shine and it is not present in CZ, which is a common counterfeit that scammers use to imitate the diamond. Only 30-35% of diamonds fluoresce, the brightness of which depends on the strength or intensity of the reaction between diamond fluorescence and black light. If your diamond does not match, I suspect that you are seeing reflections instead of the emission of ultraviolet light from your diamond when mounted. You may have seen “Strong Blue” or “Medium Blue” on a diamond certificate, which means that diamonds emit “blue” light (fluorescence) when obtained from UV light. In conclusion, natural diamonds have a property known as fluorescence which allows them to produce brilliance of varying colors when exposed to black light (also known as ultraviolet light). A pure, natural diamond is known to produce a blue glow when exposed to black light while impure ones have certain chemical impurities that trigger the brilliance of other colors such as green, white, red and yellow when diamonds are exposed to ultraviolet light.