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For the best Diamond

The four C’S

Four are the parameters which combined give quality and value to a diamond:

Carat weight:

Like with all precious gems, the weight and as a consequence the size of a diamond is expressed in carats. The word carat comes from the natural unit weight: the seeds of the “carob” tree.

Diamonds traditionally, were weighed according to these seeds up until the measuring system was established and one carat was issued at 0, 2 grams (1/5 of a gram).

One carat is split into 100 points and so one diamond of 25 points is characterized as ¼ of a carat or 0, 25 carats.

Here some examples of the size of diamonds are presented.



Almost all diamonds contain few traces of crystallized carbons , the substance from which they were born. Most of them are not visible with the bear eye and need magnifying to become visible.

They are called inclusions or pique and are considered as the fingerprints of nature, making each diamond unique. However the less they are the rarer the diamond becomes. Therefore clarity is the term used to show to what extent the diamond that you will buy is free of the inclusions.

There are three basic international grading systems for diamonds, GIA, GIBLO AND HRD. A stone is characterized as perfect from GIA if it contains no internal or external inclusions pique.

Using the GIA International Diamond Grading System™, diamonds are assigned a clarity grade that ranges from flawless (FL) to diamonds with obvious inclusions (I3).

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Diamonds by nature are colorless –transparent crystals. However as light enters in and comes out of a diamond, tints of hue of color are detectible   most of the times. The most accustomed   ranges of hues for    diamonds are the yellowish, and brownish. With the term ‘’COLORE ‘’ we describe the intensity and the tone of the hue. This slight hue of color is difficulty detectible not only to   the average consumer but also to an unaided eye of a professional diamond dealer or jeweler .It is often the case that a consumer comparing two diamond of the same seize may see no difference in the tone of “color”, even though the diamonds in question have at list a difference of 2 grades on the color. However these “slight “ differences make a very big difference in diamond quality and price .Although there are many Diamond Color Grading scales - Scandinavian for example – the one that has prevailed is the GIA color grading scale that uses the Latin alphabet  letters as its scale categorizing the shade of color  . D, the top grade, represents the total and absolute absence    of any color, to the lowest grade described by the letter Z. Most of the diamond used in jeweler fall in the near colorless rang which by the GIA Color Scale is given a grade of between G to J. Of course the higher   the color of a diamond the higher the value, given the other parameters (clarity, cut and carat) stays the same. However diamonds that have a very strong intensity of color shade are described as FANCY COLOR. Most common color in this category is been the YELLOW. Pink purple, blue, orange, and green are   extremely rare and fetching values comparable only to masterpiece art work. 

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From the 4 C’s the cut consists of the most immediate influence of man. The other 3 C’s have an immediate influence form nature.

The cut and shape of a diamond influence dramatically its glow and beauty and are in the dexterity of the craftsman that creates them.

The cut is what allows the diamond to make the best possible use of light.

 1 - When the diamond is cut in the right proportions the light is reflected from the one base to the other and then is released from the central base.

 2 - If the cut is too deep then a proportion of light escapes from the opposite side of the cone.

 3 - If however the cut is small, the light escapes from the same side  of the cone without giving a reflection


Cut is the factor that fuels a diamond’s fire, sparkle and brilliance.

The traditional 58 facets in a round brilliant diamond, each precisely cut and defined, are as small as two millimeters in diameter. But without this precision, a diamond wouldn’t be nearly as beautiful. The allure of a particular diamond depends more on cut than anything else.

Though extremely difficult to analyze or quantify, the cut of any diamond has three attributes: brilliance (the total light reflected from a diamond), fire (the dispersion of light into the colors of the spectrum), and scintillation (the pattern of light and dark areas and the flashes of light, or sparkle, when a diamond is moved).

People often think of diamond cut as shape. Round is the shape used in most diamond jewelry. All other shapes are known as fancy shapes. Traditional fancy shapes include the marquise, pear, oval and rectangle.  Hearts, triangles and a variety of others are also gaining popularity in diamond jewelry.