How do you grade diamonds? Understanding grade scale is important if you want to learn more about diamonds and diamond jewelry!
Wondering how to grade diamonds? Interested in determining the quality of the diamond, however, you don’t have a grading certificate. Don’t worry, as you are at the right place.
If you are asking – how do you grade diamonds – we will show you a few basic information every diamond jewelry buyer should know.
You can grade a diamond by yourself, however, you need to keep in mind that the grades you will come up with will be approximate to the exact values.
The most important factors that are graded in a diamond are clarity, color, and cat. Diamond carat weight is measured in carats and is also an important element that determines the diamond price.
There are a few different grading scales for diamond carat, color, and cut, but today we will use one of the most popular methods – the system introduced by Gemological Institute of America or GIA.
On the GIA scale, the color of the diamond is graded by using letters D-Z where D represents the highest grade and Z represents the lowest grade. The GIA clarity scale includes the following grades – IF, FL, VVS1, VVS2, VS2, SI1, SI2, I1, I2, and I3. The cut grading scale includes the following grades – Poor, Fair, Good, Very Good, and Excellent.
The color of the diamond is basically graded by analyzing and comparing the stone with a set of graded master stones and evaluating which one of them is closest to the diamond in terms of color. You can also try and determine its approximate color grade by analyzing and looking at how colorless it looks.
Diamond clarity is graded according to how many natural flaws can be noticed within a diamond on its surface by looking at the diamond with the naked eye or under magnification. Please keep in mind that sometimes it is really hard to pinpoint the exact clarity grade unless you are qualified and experienced in gemstone grading.
In order to grade diamond cut, you need to determine some of its proportions and measurements that are considered essential for how the stone or the diamond reflects light. This is a complex process, however, you can determine cut quality by analyzing some key characteristics and ratios. The key ratios are table percentage and dept percentage, while the key characteristics are girdle thickness and culet size.
Where to buy diamond jewelry?
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