The price of diamond according to carat weight, color, purity and size quality.
Diamond prices are based on four main criteria, the famous 4C: Carat, Color, Clarity, Cut. It is these criteria that define carat weight and quality in terms of color, purity and size. The last parameter, the cut, is of the greatest importance: it determines the brilliance of the stone. But if you buy a diamond, it is above all for it to shine a thousand lights. It is therefore essential to be careful to buy a diamond with the best quality criteria size possible.
Diamond price per carat (0.30 carat, 0.50 carat, 0.70 carat, 1 carat ...)
The carat, in jewelry, is a unit of mass to calculate the weight of a gem. One carat equals 200 mg (or 0.20 grams). The larger the diamond, the higher the carat weight and the higher the diamond price. It will therefore be possible to find diamonds of different diameters, different sizes, and therefore of different weights and at different prices. The i-Diamonds website offers the online sale of several diamond weights ranging from 0.20 carats to 1 carat and over.
Diamond price by color (D, E, F, G, H, I, J, K, L, M)
There are several shades of colors associated with this stone and can be defined using a scale (in the form of capital letters ranging from the letter D to M in alphabetical order.) With this mark, it It is possible to determine the exact color of the diamond that you want to appraise or buy. The letter D designates a diamond of color called exceptional white +. The letter M, it refers to a very pale yellow tint. The other categories: the letter E will correspond to an exceptional white diamond, the letter F to an extra white diamond +, the letter G to a diamond says extra white, the letter H to a diamond says white, the letter I to that the letter J will be shaded white, the letter J will correspond to a diamond of a white color that is also nuanced, the letters K / L to a white diamond slightly tinted and finally the letter M mentioned above.
Diamond price by purity (IF, VVS1, VS2, VS1, VS2, SI1, SI2, SI3, Pique)
The price of diamonds is also defined by the degree of purity. As with color, there are different levels of purity. First of all, be aware that a 100% pure diamond does not exist, or at least in its natural form. We will always find, in each diamond a priori very pure, small inclusions even tiny. Also, it has been established, by convention, that a diamond will be called pure, when an expert will analyze the stone and that it will find no defects under a magnification of 10 times under the magnifying glass. Thanks to this fixed rule, it is possible to define the degree of purity of the diamond according to a scale established by three criteria: the size of the inclusion, present in the gem, its contrast compared to the support (bottom), and its position . IF, translated internally by flawless, shows purity with no inclusions under magnification × 10 under a magnifying glass. Categories VVS1 and VVS2 are for diamonds containing tiny inclusions, which are very difficult to observe under × 10 magnification. The acronym VVS stands for Very Very Small Inclusion (s). Categories VS1 and VS2 highlight diamonds containing very small inclusions that are difficult to detect at 10x magnification. VS translates as: Very Small Inclusion (s). The SI1, SI2 and SI3 categories are for diamonds with small inclusions and easy to spot at magnification × 10 under a magnifying glass. However, these observations remain invisible to the naked eye if they are made on the crown side. Translate SI by Small Inclusion (s). It is important to emphasize that the SI3 category is not recognized by the GIA, HRD and IGI expertise laboratories, but by the diamond dealers. Finally, the Pique category, including P1, P2 and P3, allows to highlight the diamonds containing several inclusions visible under the microscope by magnification × 10 and with the naked eye on the crown.
Diamond price by cut (Excellent, Very Good, Good, Fair)
The cut of the diamond is very important. She will play a role in the final aspect of it. Depending on the shape of the diamond, the main criteria, carat weight, color and purity, will be more or less highlighted. Diamond also has light accumulator properties. These are the characteristics that will allow the gem to reflect more or less light, thus providing the famous sparkle or flicker that makes the diamond so bright at times and under certain lighting. This phenomenon of refraction occurs when the diamond has the ideal proportions, when it is neither long nor thick, but really well proportioned. Cut grade, the most important criterion and in relation to the configuration of the stone, makes it possible to relate the proportions of the diamond with the brightness intensity. The other two criteria are the polish grade, allowing the evaluation of the polishing quality of the gemstone, and the symmetry grade, which allows him to evaluate the symmetry differences in the facets and the shape of the diamond. Each of these criteria will determine the final diamond price through the following ratings: Excellent, Very Good, Good, Fair.
Carat weight: the first price criterion for diamonds
The first criterion of the price of the diamond will be its weight in carat. The bigger the gem, the higher the price will be. The ratio (price / weight in carat) is exponential: the price per carat is much higher for a diamond of 1 carat than for a diamond of 0.90 carat for example. And there are real price levels: a 0.39 carat diamond remains in the 0.30 carat diamond price range while a 0.40 carat diamond goes in the 0.40 carat diamond range. The price differential between a 0.39 carat diamond and a 0.40 carat diamond is therefore much higher than the price difference between a 0.40 carat diamond and a 0.41 carat diamond.
Diamond certificate: also diamond price criterion
The diamond certificate is also a price criterion, because it allows to attest to the authenticity as well as the quality of the gemstone. Provided it was, of course, issued by one of the recognized laboratories of expertise.
The 3 laboratories most sides: GIA, HRD and IGI
Among the most prestigious laboratories, there are only three, recognized worldwide: the GIA, the HRD and the IGI.
The GIA (Gemological Institute of America), is a gem expertise laboratory located in the United States, the United Kingdom and Belgium. It is a world-renowned institute.
The HRD (Hoge Raad voor Diamant) is also a laboratory of expertise known worldwide. It is located in Belgium.
The IGI (International Gemological Institute), also recognized worldwide, is located in many cities that are New York, Dubai, Hong Kong, Toronto, New Delhi and Tel Aviv. It should be noted that it was the first institute to have proposed the protection of diamonds by the process of under seal.
Labs to avoid: AIG, EGL, IGS ...
Laboratories other than GIA, HRD and IGI have no worldwide recognition. In addition, they offer so-called certificates of convenience because offered at low prices. These certificates have no real value and therefore do not guarantee the authenticity and quality of the diamond.
Value of natural diamond versus synthetic diamond
Natural diamond and synthetic diamond have very similarities when placed side by side. It is impossible to differentiate them under the microscope and magnifying glass, and even less with the naked eye. Only professional organizations such as the GIA, HRD and IGI laboratories, which are equipped with very sophisticated and very expensive devices, can detect the synthetic diamond.
Value of natural diamond
Natural diamonds come from deposits from nature. They appeared during many geological processes. The Earth, by definition, being endowed with exhaustible natural resources, the natural diamond thus represents a rare and precious gem, available in limited quantity. This is what makes its real value only increase over time.
Value of synthetic diamond
Synthetic diamond is the result of technological processes that reproduce the mechanisms of formation in the natural state. It is laboratory-designed and easily detectable when subjected to expert laboratory testing. Massively produced in the world, the synthetic diamond can only see its value diminished over the years since it is not uncommon like the natural diamond. It is therefore not a safe bet that can serve as an investment or resale.
Diamond price simulator
The diamond price simulator is an online tool, easy to use, and to estimate the diamond or diamonds that you want to appraise. It can also have a role of price comparator when one wishes to make the purchase of a diamond. To do so, you must select the carat weight, color, purity and shape. You just have to start the calculation to know the estimated value of your diamond. Our diamond price catalog higher on this page can serve as a simulator.