Sapphire Color Grading Scale

When most people inquire about the grading classification of a sapphire they expect that it will have a similar standardized system as diamond grading. Sapphires come from a family of gemstones called corundums. Different grading systems are used to determine the quality of this precious gemstone depending on what factor is being graded.

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Standardized grading of color clarity and cutting has never been something that has been established on a uniform basis within the trade or within the various.

Sapphire color grading scale.

Of course to measure a gem s carat weight you only need an accurate scale calibrated to measure small objects like gemstones. The charts illustrate the wide variations in color gradings for sapphire and rubies as well as the three main factors which make up sapphire s color. They range from medium to dark reddish purple to violetish purple with weak to vivid color saturation the major fancy sapphire color categories are padparadscha pink and purple orange and yellow green and colorless and black. Sapphire ring co has incorporated the official gia sapphire and ruby color map below.

The charts explain the color grading system used by all gia g g. Analysis grading. More ruby and sapphire grading tools. These include sapphire color sapphire clarity and also their cut and carat weight a sapphire s country of origin is also taken into consideration when determining its value.

Hue tone saturation. Check for symmetry windowing and extinction. Each category has its own color range causes of. Given the lack of a standardized grading system for sapphires it is important to be able to differentiate a superior quality sapphire from an inferior quality one.

Color is the most important. The price of a sapphire varies greatly with its quality. Natural sapphires are graded and valued by a few factors. Look out for bulging areas and a thick pavilion.

Gemologists in their color grading of sapphires rubies. Again the best ruby and sapphire grading tools are your eyes and perhaps a loupe.

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