That’s why most physical diamond and jewelry stores will have very specific lighting designed to accent their merchandise in the best possible way. Fluorescent light, on the other hand, enhances a diamond’s brilliance. For example, LED light is much more beneficial for the forming of diamond fire than fluorescent light. Diamond Fire and Light Sourcesĭiamond fire is also affected by some external sources such as the quality and type of light that’s falling on the stone. Notice the sparkle, brilliance, and fire of this stone. This is the sparkle that reflects off the body of the diamond and gives the stone life. When the diamond moves, the scintillation is immediately noticeable. ScintillationĪlso referred to as sparkle, diamond scintillation is the combined effect of brilliance and fire on the stone. Notice how the stone has flashes of color and brilliance as it moves and is viewed from different angles. To make this clear, take a look at the video of this diamond ring. The difference between diamond fire and diamond brilliance is that while diamond fire is the dispersal of white light into all the colors of the rainbow, brilliance refers to that same white light coming out of the diamond undispersed. While the diamond fire is mostly used as an indicator of the diamond’s cut quality, it also is an indicator of its clarity. These flaws will make the passing of light through the diamond much harder which, in turn, will reduce the stone’s brilliance, scintillation, and fire, turning it into a much more unappealing one. A Low Clarity Diamond.Ī diamond with low clarity will have lots of imperfections within the stone that affects its appearance and light performance. Clarityĭiamond fire is an optical effect of diamonds while diamond clarity is part of the physical property of the stone that makes diamond fire possible. In other words, diamond fire is not just a beautiful effect that a diamond might have but is also a clear indicator of its cut’s quality. Diamond fire, along with brightness and scintillation, describe the overall face-up appearance of the stone. In fact, diamond fire is such a clear indicator of a diamond’s cut quality that the GIA Cut Grading Systemfor brilliant diamonds has listed diamond fire as one of seven key components to rate the quality of its cut. If the diamond is too deep or too shallow both of these effects will be greatly diminished. For example, the depth of a diamond is as crucial for the adequate dispersion of light as it is for the reflection of white light. The exact proportions and dimensions of a diamond have a direct bearing on its light performance. That’s because the cut determines how exactly the light that enters the stone will be broken into it and reflected back to us. The quality of a diamond’s cut is arguably the most important factor for whether the stone will have a noticeable fire. The diamond’s cut, clarity, color, and overall quality are crucial for how much light dispersion the stone will be able to display. Most diamonds display fire, but this isn’t to say that diamond fire is something that occurs equally in all diamonds. It’s often called by its more technical name light dispersion as it accurately describes how these flashes of colorful light are formed – through the dispersion of the white light. Simply put, diamond fire is the captivating little rainbows that diamonds create when shone with white light. It’s the result of the diamond’s prism-like ability to break white light into its separate light spectrum colors. Diamond fire refers to the colorful flashes of light that a diamond will disperse under lights.
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