Diamonds that belong to a group called type IIB tend to appear blue. However, after absorbing high-energy light, such as UV light, type IIB diamonds glow in the dark for a short period of time. This residual glow refers to the phosphorescence of a diamond that varies in color from blue to pink and fiery red, depending on the diamond. Fluorescence in diamonds is the brightness that can be seen when the diamond is under ultraviolet (UV) light (that is, you will see 30% of diamonds shine under ultraviolet light).
When exposed to ultraviolet light, there will be a diamond that will shine in different colors. The GIA rates diamond fluorescence as None, Weak, Medium, Strong and Very Strong. Fluorescence is the glow that is sometimes seen when an object emits visible light. Some diamonds fluoresce when exposed to long-wave ultraviolet (UV) rays from sources such as the sun.
This can cause them to emit a bluish light or, more rarely, a yellow or orange light. Once the UV light source is removed, the diamond stops emitting fluorescence. The ability of a diamond to shine under such conditions is called fluorescence. When some real diamonds are subjected to a dark room with ultraviolet light, they can give off a certain glow.
Fluorescence is the phenomenon of a material that glows when exposed to certain wavelengths of ultraviolet light. This is very common in natural diamonds. Diamonds glow with black light due to a phenomenon called fluorescence and approximately 35% of natural diamonds show some degree of this effect. In nature, the presence of certain chemical impurities within the diamond composition triggers this brilliant effect in the presence of an ultraviolet light source.
The diamond may appear to glow purple under a black light because the source itself looks a little violet. But honestly, the best way to approach fluorescence when choosing your diamond is the same way you approach other diamond characteristics, such as shape. They have a specific line of diamonds called “Brian Gavin Blue” that offers exceptional diamonds with medium and very strong fluorescence intensities. If a gem doesn't shine in dark light, it could fall into the category of natural diamonds that don't fluoresce.
Diamond fluorescence is a fascinating phenomenon in which diamonds shine when exposed to long-wave UV rays. 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. Interestingly, diamonds can also glow under black light in a variety of other colors ranging from yellow, white, red, green and orange.
First, you can check the authenticity of the diamond you have by matching the inclusions to the clarity graph of the diamond. Keep in mind that cut quality determines the brilliance of a diamond and not its ability to shine in low light conditions. Another practical benefit of buying a diamond with fluorescence is that it can help improve the color appearance of diamonds in the lower color ranges.
