Most diamonds are slightly yellow in color, and the more yellow the diamond is, the lower color grade it receives. Find the plan that works for you. Lifetime Guarantee We offer a lifetime guarantee on all our diamonds, rubies, sapphires and emeralds. The Light Performance Report includes the three bar graphs and also shows images of the diamond under five different light views used for measurement of Light Performance. The information contained in every I. It offers diamond and colored stone certificates, educational courses to the trade, and diamond laser inscription. They are up-to-date about any new developments in the gemological and jewelry fields. GemEx GemEx Systems is an independent laboratory that provides certification on the light performance of a diamond, stating the measurement of fire, sparkle and brilliance for your Leo Diamond. As diamonds get bigger, a fraction of a difference in carat weight is more noticeable.
Anywhere from separate gemologists will individually grade each and every diamond for an accurate final grade. Marquise Cushion Shape selection is a personal choice best made by taking the preferences of the intended recipient into account. Bigger diamonds cost more, of course. It then rates each of these three measures compared to other diamonds of the same shape. Diamond Table The table is the top facet, or the flat surface on the top of the diamond. Diamond Fluorescence Fluorescence refers to the glow a diamond emits when placed under an ultraviolet light. Most diamonds are slightly yellow in color, and the more yellow the diamond is, the lower color grade it receives. Lifetime Guarantee We offer a lifetime guarantee on all our diamonds, rubies, sapphires and emeralds. The result is a gem lab equipped to meet the evolving needs of the industry. Each diamond is examined by a minimum of four gemologists: But certain carat weight thresholds can cause a big jump in cost — for example, a 1-carat diamond might cost much more than a 0. They are up-to-date about any new developments in the gemological and jewelry fields. Diamond Color Perfectly white colorless diamonds are hard to find — which is why D-color diamonds are so expensive. GSI is an independent gemological laboratory that provides professional gemstone identification, grading and appraisal services exclusively to the fine jewelry industry. Slightly or very slightly included diamonds can still be beautiful, but you have to judge each individual diamond for yourself. Diamond Clarity Most diamonds have some flaws or inclusions within them. Usually jewelers prioritize cut over the other "Cs" of a diamond. Find the plan that works for you. It offers diamond and colored stone certificates, educational courses to the trade, and diamond laser inscription. Diamond Cut The way a diamond is cut and proportioned affects how the light shines through it. The scale for each shape was set by measuring thousands of diamonds to determine the highest and lowest amount of white light, color light and scintillation possible for each shape. Culet The small facet on the bottom tip of a diamond. Dossier will have the full individual details of each diamond graded, but the plotting is not included. If a diamond has been graded by A. I International Gemological Institute and G. One of the more common reports is the full-issued G.
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