Isadora diamond4/14/2023 The GIA set the standard for diamond grading and gemmological identification, and their diamond grading system serves as the international gem and jewellery industry’s benchmark credentials. Prove useful if you want to resell a diamond.Help to verify ownership for repair or insurance.Diamonds with a GIA grading report will help you down the road to: Your diamond certification is so important, it’s sometimes referred to as the 5th C. Is It Important To Get A Diamond Grading Report When You Buy A Diamond? NOTE: If a jewelry store offers to sell you a loose diamond without a certificate, keep in mind that it means you are buying the diamond based only on the salesperson’s claim about its quality, and that a trained gemologist or even other jewelers may disagree with the salesperson’s assessment. You can compare one diamond with a particular weight and quality with other diamonds of similar weight and quality to determine which diamond is the better value - or which merchant has the best prices. Shopping for certified diamonds allows you to make an informed choice about your diamond selections and to comparison shop among various diamond merchants. If you do elect to buy non GIA- or AGS- certified diamonds, always ask for credentials of the certifying lab. Therefore, we recommend buying from a diamond jewelry store that offers GIA or AGS certified diamonds, as these labs have consistently demonstrated their commitment to high standards. If you opt to buy non GIA- or AGS- certified diamonds, always ask for credentials of the certifying lab.Īnd while there are many other diamond grading labs in operation (many of which produce their own grading reports), dfferent labs have different grading standards, and some labs will be more lenient with their standards than others. Not all diamond certificates are created equal. There are many diamond labs that issue certificates, but the Gemological Institute of America (GIA) and the American Gem Society (AGS) are the two most widely regarded and recognized diamond grading labs in the world. The popularity of diamonds is enhanced by their hardness and the ability to disperse light which gives the diamond its characteristic “fire”.**Click on the image to enlarge Who Issues Diamond Certificates? Popularity:ĭiamonds are among the world’s most sought-after gemstones and have been used as adornment for centuries. Hardness:ĭiamond is the hardest material on earth on both the Vickers scale and the Mohs scale. The cut of a diamond describes the quality of workmanship and the angles in which a diamond has been shaped and polished from a rough stone to its final gem proportions. Some of the coloured diamonds, such as pink, are very rare. White diamonds are graded from D (colourless) E, F (very little trace of colour) G, H (little trace of colour) and I, J and K (slight colour). Colour:ĭiamond colours vary from white, yellow, blue, black, green, pink. Clarity:ĭiamond clarity is the quality of diamonds that relates to the existence and visual appearance of internal characteristics of a diamond (inclusions) and surface defects (blemishes). The carat weight measures the mass or weight of a diamond. Each brilliant cut diamond consists of 58 facets – 33 on the top half above the middle (girdle) and 25 on the lower half below the girdle (pavilion). The design uses facet arrangements and proportions to maximise the fire of diamonds. The modern round brilliant cut is the most popular of diamond cuts. Some tens to hundreds of million years ago they were carried to the surface in volcanic eruptions and deposited in igneous rocks. Most were formed at depths between 150 and 250 kilometres. Natural diamonds are between 1 billion and 3.5 billion years old.
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