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The gemstones are, since antiquity, rich in beauty and history. Their variety of different shapes and colors offers a range of infinite choices but before you buy any gemstone is good to learn more about different aspects essential. In fact there are certain criteria and rules are essential for anyone who wants to buy a gemstone that is of high quality. Gems are generally defined as natural materials (usually minerals) that are used after a suitable processing, for ornamental purposes or in jewelry.

Each gemstone is different from each other and this is given by the essential aspects present in each of them. We are referring to the famous 4 evaluation criteria of the gems: Color, Clarity, Cut and Carat weight. In addition to these 4 important aspects you must not underestimate other considerations such rarity, market demand and origin when buying a gem.

The classification of purity:

To classify the purity isnecessary to have a system to communicate the results in a clear andunderstandable. This classification is used by most of the experts inthe field and has spread very rapidly in the jewelry industry. Allmeasurements are done by an expert with a magnifying glass to tentimes magnification.


The classification of clarity:

Clarity is a measure of the number and size of the tiny imperfections that occur in almost all diamonds.

Many of these imperfections are microscopic, and do not affect a diamond's beauty in any discernible way.

Much is made of a diamond's clarity, but of the Four Cs, it is the easiest to understand, and, according to many experts, generally has the least impact on a diamond's appearance. Clarity simply refers to the tiny, natural imperfections that occur in all but the finest diamonds. Gemologists refer to these imperfections by a variety of technical names, including blemishes and inclusions, among others. Diamonds with the least and smallest imperfections receive the highest clarity grades. Because these imperfections tend to be microscopic, they do not generally affect a diamond's beauty in any discernible way.



FL, IF

Flawless, Internally Flawless: No internal or external imperfections. Internally Flawless: No internal imperfections. Very rare.

VVS1,
VVS2

Very, Very Slightly Included: Very difficult to see imperfections under 10x magnification. An excellent quality diamond.

VS1,
VS2

Very Slightly Included: Imperfections are not typically visible to the unaided eye. Less expensive than the VVS1 or VVS2 grades.

SI1,
SI2

Slightly Included: Imperfections are visible under 10x magnification, and may be visible with the unaided eye. A good diamond value.

I1

Included: Blue Nile offers a limited selection of jewelry with diamonds of I1 grade clarity. This grade of diamonds will have minor inclusions that may be visible to the unaided eye.

I2, I3 Blue Nile does not carry diamonds of I2 or I3 grade clarity


What Clarity Grade Is Right For Me?

Select an "eye-clean" diamond - one that has no imperfections visible to the unaided-eye through the crown. An excellent value, diamonds of this clarity are much less expensive than flawless (FL) or internally flawless (IF) diamonds, which are extremely rare and command higher prices.

Frequently, imperfections in diamonds graded slightly included (SI) are not visible to the unaided eye, making them an excellent value. If you're considering a diamond with an SI clarity grade, call to speak to a diamond and jewelry consultant who will review the diamond to ensure the imperfections are not visible to the unaided eye.

Now that you understand clarity, learn about a diamond's carat weight.

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