GUIDE ON DIAMONDS
A masterpiece loved by the light
| Carat Weight
The weight (Carat Weight), refers to the weight of a diamond.The carat is often confused with the size even if effectively it is a unit of weight. One carat can also be divided into 100 "points". A 0.75 carat diamond may be shown as a diamond of 75 points or ¾ carat.
A one carat diamond doesn't cost exactly twice of a half-carat diamond, since larger diamonds are more rare in nature, factor that places them at the top of the pyramid of the quality of diamonds, a diamond of one carat will cost much more than double that of a half-carat diamond from the samecolor, clarity and cut.
|This parameter refers precisely to the color of a diamond. The color range of diamonds varies from white to warm white ice. Diamonds are graded according to a scale established by the Gemological Institute of America(GIA) which ranges from D (colorless) to Z. The colors shown in the table||only serve to show the differences in shades. The letter D refers to the stones perfectly colorless,the rarest and costose.Di then we color E (exceptional white), F (extra white +), G (extra white), H(white), IJ (white color slightly ), KL (white color), MNOPRSZ (coloring).|
|The Purity is evaluated according to the amount of inclusions present in a diamond. Almost all diamonds have inclusions in them, sometimes called "nature's fingerprints". They are natural identifying characteristics such as minerals or fractures, that appear duringthe formation of||diamonds in the ground. They can take the form of tiny crystals, clouds or feathers, however, normallynot visible to the naked eye. To view inclusions, jewelers have to use a magnifying glass that allows them to see a diamond magnified 10 times in order to better localize the inclusions. The position of an inclusion can help to determine the value of a diamond. There are very few diamonds in nature entirely free of flaws and these are therefore extremely valuable.||The inclusions are evaluated on a scale of perfection, known as purity, established by the Gemological Institute of America (GIA). Some inclusions can be hidden by the frame and therefore have little effect on the beauty of the stone. An inclusion in the center or on the table of the diamond may affect the dispersion of light,thus decreasing the brightness of the stone. The higher the purity of the diamond, the higher the luminosity, the value and rarity of the stone.|
The cut is the only one of the 4Cs to be influenced by man. On the basis of mathematical formulas, a well cut diamond will reflect light internally from one facet to another as in a mirror and then disperse and reflect it through the crown and table.
The cutting can also refer to the form, for example round, square, in drops, to the heart. As a round diamond is symmetrical and capable of reflecting nearly all the light that enters it, this is the form with greater brightness and follows specific guidelines about the proportions.
NB: The difference between diamond and brilliant
Many people confuse the word "diamond" with the word "brilliant". The Diamond is the gem of great value; the brilliant is a type of cut (cutting round) and for its features allows a better shine. So any stone, for example, zircon, can have a brilliant cut, but it has nothing to do with thediamond stone.
Value and origin of diamonds
The value of a diamond depends on the weight and quality, but not in a proportional way. The higher is the rarest caliber is the stone and then its value increases dramatically. Two stones of equal weight can have two completely different values if they have the same characteristics of purity, color and cut. The most important deposits are found in India, Brazil and South Africa. Even in the countries of the former Soviet Union can be found diamond veins. The largest diamond found so far, the Cullinan (South Africa) of 3106 carats, President Vargas(Brazil) of 726.60 carats, the Great Mogul (India) of 246 carats. All stones of inestimable value.
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