![]() ![]() So, as a diamond shopper, you need to look beyond the measurements on a grading report. The diamonds may look and perform differently but they will still have a similar impact on the observer. In fact, diamonds with different proportions can receive the same cut grade. However, an important outcome of GIA’s cut research was the finding that there is no single set of proportions that defines a well-cut round brilliant diamond. Their size and placement will influence how light behaves as it passes through the diamond and back to your eye.Ī diamond’s proportions can help predict how well a diamond will deliver brightness, fire and scintillation. Copyright: GIA & Harold and Erica Van PeltĪ diamond’s proportions – its crown and pavilion angles and the relative measurements of its facets – are key contributors to a diamond’s overall face-up appearance. Scintillation, the pattern of light and dark areas and the flashes of light, or sparkle, can only be seen when a diamond is moved. ![]() This round brilliant cut diamond shows good brightness and fire. A GIA cut grade includes an assessment of how well a diamond delivers on each of these attributes. What you might consider “sparkle” is really the overall visual effect of these three factors. ![]() When you see internal and external white light reflected from a diamond, you’re noticing “brightness.” If you see the scattering of light into all the colors of the rainbow, you’re being treated to “fire.” Sparkle is actually “scintillation,” the pattern of bright and dark areas caused by reflections within the diamond as it or the light source moves. People love diamonds for their dazzling interplay with light – which the layperson often translates as “sparkle.” But there’s a lot more going on here. Diamond sparkle and face-up appearanceĪ key component of a GIA diamond cut grade is the diamond’s face-up appearance – or how the diamond looks when viewed from above, as if it was set in an engagement ring. ![]() The diamond received an Excellent cut grade from GIA. The reason behind the sparkle of this 1.01 ct round brilliant cut diamond engagement ring is the quality of the diamond’s cut. The quality of the workmanship or craftsmanship that went into aligning and polishing the diamond’s facets.How well the diamond was designed to ensure durability and optimal weight.How the diamond appears when viewed face-up based on the attributes of brightness, fire and scintillation.The result was the GIA Cut Grading System, which evaluates the cut quality of a round brilliant diamond along a five-point scale ranging from Excellent to Poor. GIA then validated its research with human subjects, conducting more than 70,000 observations on actual diamonds, to determine which diamonds people found appealing and why. GIA’s research included the use of advanced computer modeling to analyze tens of thousands of possible proportion combinations. GIA’s aim was to understand the factors that contribute to a round brilliant’s appearance and to determine which of those factors – or combination of factors – produce diamonds that people consider attractive. In arriving at its cut grading system, GIA spent 15 years studying how light behaves within a round brilliant cut diamond. So, understanding the diamond cut grade is key to picking a round brilliant that’s not only beautiful, but also the best value.Ģ. A diamond’s cut grade is also an indication of how well it was designed and crafted. If the diamond is well cut, most compromises in clarity, color and even carat weight can be forgiven. A well-cut round brilliant delivers that unmistakable, stop-in-your-tracks light show that telegraphs “diamond” across a crowded room. Some professionals consider cut the most important C of diamond quality. All else being equal, the better the cut grade, the more valuable the diamond. To pick a diamond whose flashes of light enchant the eye, you need to know the 4Cs of diamond quality, the universal standard for judging diamonds: color, cut, clarity and carat weight. The quality of a round brilliant diamond’s cut determines how much the diamond sparkles. Experts estimate that this cut alone accounts for more than 70% of all diamonds sold today. The most popular diamond in the marketplace is the round brilliant. Diamond cut quality and why it’s important Design, craftsmanship and the GIA diamond cut gradeġ.Diamond cut quality and why it’s important.Let’s cover some essentials so you can pick the perfect round brilliant diamond engagement ring. Cut is the most complex of a diamond’s 4Cs. A GIA diamond cut grade is key to knowing how well your round brilliant diamond will sparkle. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |