![]() That’s why jewelry stores often employ high powered halogen lamps in combination with LED and overhead lighting to enhance the diamond’s fire and brilliance. Even though these 3 diamonds all have super ideal cut quality, their performance can be suppressed in an environment with diffused lighting.ĭiamond brilliance vs scintillation vs fire seen in different lighting environments. In the video below, I’ve made a compilation where you can see how 3 diamonds interact with light in different environments. LED) will allow the diamond to disperse it into visual colored flashes of light instead of a large, diffuse source of light (e.g. A direct, concentrated source of light (e.g. The facets of a diamond act as a prism to refract light and split it into a spectrum of rainbow colors. First of all, you need to understand that the light source plays an important role in observing fire. This is a commonly asked question I get from readers who are concerned about the “disappearance” of fire and sparkle from their diamond ring. Make sure you check them out if you want a high quality diamond that is full of life and sparkle. White Flash, Brian Gavin and James Allen are retailers that offer super ideal cut diamonds that are curated for the best optical performance and cut precision. Besides having a combination of ideal proportions, you need to look at the tangible data of a diamond to correctly assess its light performance. Now, I want to point out that the table size % shouldn’t be considered in isolation when analyzing a diamond. For a round cut diamond, the ideal table size should be between 53-57%. Fire tends to decrease as table % increases due to a lesser area for crown facets to produce fire. In general, the smaller the table facet of a diamond, the more fire the diamond can produce. ![]() ![]() The brighter and more colored flashes of light seen in the diamond, the better the grade it receives. In the GIA lab, the fire dispersion of a diamond is graded under LED lighting and a visual assessment is made by a gemologist viewing it at different angles. How is Diamond Fire Assessed And Graded in the Gemological Labs?Ĭomparison of fire between a super ideal cut diamond and a generic triple excellent diamond – WhiteFlash. If this sounds confusing to you, a simple analogy for this phenomenon is the formation of a rainbow after a rain shower where sunlight is dispersed by water droplets in the atmosphere. As this happens, this causes the light to refract again as it speeds up when exiting the diamond through the crown facets.īecause different wavelengths of light bent at different rates, this refraction causes light to break up into its individual color components and is subsequently seen as fire. Upon hitting the pavilion facets of the diamond, the light reflects back towards the crown facets. When light enters the diamond, it is slowed down and bends. From a physics standpoint, the science behind fire occurs when light travels through the diamond and gets refracted. White light is basically made up of many different wavelengths that each correspond to a specific color that our eyes see. What Causes Diamond Fire And Light Dispersion?Ī diamond behaves like a prism which refracts light.
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