Behind all the glam and glitz, the nature of diamonds is an intricate wonder in itself. On the outside, every one of them might seem unmarked and flawless, unique in its shape and beauty, but there are certain things invisible to the naked eye or aspects newcomers might overlook. Each detail can and will impact the price, so it is important for buyers to truly know what they are buying and what aspects they need to consider. For these reasons, we’ve gathered four of the most important considerations both for simple admirers or future investors.



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One of the many reasons why diamonds are very valuable is how they were formed in nature—under extreme heat and pressure. As a result, most diamonds contain intricate details such as internal characteristics, commonly called “inclusions”, and external characteristics, or “blemishes”. The Gemological Institution of America (GIA), which is the most significant authority in diamond certification, has determined a GIA Color Scale containing 11 grades of clarity. These grades include flawless; internally flawless; very, very slightly included; very slightly included; slightly included; and included. Flawless refers to no inclusions or blemishes, while included means obvious inclusions visible that may affect transparency and brilliance.



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The most valuable and expensive diamonds are the ones that are completely colourless. While most diamonds appear colourless, they actually contain slight tones of yellow and brown that look are subtle and require trained eyes to see. The GIA scales the colours with letters, from D to Z. D to F indicate colourless; G to J nearly colourless; K to M slightly tinted; N to R very light yellow; and S to Z light yellow or brown. Don’t worry, though: diamonds graded K upwards can appear very beautiful with the right clarity and cut. Besides that, you can explore other options with naturally coloured diamonds that come in the shades of rainbow.



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Although diamonds can be crafted into all kinds of shape, the “cut” referred to here means the complex proportions of a diamond: finish, symmetry, and last, but not least, polish, ranging from “excellent” to “poor” by the GIA. This factor can be very impactful on a diamond’s brilliance—how light travels and exits through it. Another mark of this excellency is that well-cut and crafted diamonds are always sold at a premium, while poorly cut diamonds are sold discounted.



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The last and most important thing to consider when buying a diamond is, obviously, the size. Size, like it or not gentlemen, matters! A diamond with a bigger size has an extravagantly higher price on the market. As it stands, 1 carat = 200 milligrams = 100 points. The reason there are “points” to indicate the size is because most diamonds sold in the market weigh less than 1 carat, and, of course, it’s easier to order a 75-point diamond’ than a 0.75ct diamond. Small ones, apparently, are favoured as well, with 0.5ct to 0.75ct diamonds pretty popular thanks to their functions. That said, bigger ones are much more valuable due to their rarity.


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Tags: Crystal, Gia, Gem, Diamond, Guide, 4cs, Beginner