Guide to diamonds, a masterpiece loved by light

Guide to diamonds · everything you need to know about diamonds

The diamond is the queen stone of jewelry not only for its value, but for the specific characteristic of refracting the light in many crystalline reflections and magical glows that only a diamond can give.

GioiaPura offers a wonderful collection, with a wide range of rings, earrings, bracelets and necklaces. The items set with diamonds are accompanied by their own certificate of guarantees and authenticity in which all the ccharacteristics of the diamondre illustrated.

All diamonds are rare, but some are rarer than others and therefore of greater value. To determine the characteristics and the value of a diamond it is necessary to know the "4 C" Carat, Color, Clarity, Cut. The best combination of these four characteristics determines the greatest value of the diamond.


Carat Weight

Carat Weight refers to the weight of a diamond. The carat is often confused with the size even if it is actually a unit of weight. A carat can also be divided into 100 "points". A diamond of 0.75 carats can also be referred to as a diamond of 75 points or ¾ of a carat.

A one-carat diamond does not cost exactly twice as much as a half-carat diamond, as larger diamonds are rarer in nature, which places them at the top of the diamond quality pyramid, a one-carat diamond will cost much more than double that of a half carat diamond of the same color, clarity and cut.



This parameter refers precisely to the color of a diamond.
The color range of diamonds varies from ice white to warm white. Diamonds are classified according to a scale established by the Gemological Institute of America (GIA) which goes from D (colorless) to Z. The colors shown in the table are only to show the differences in shades. The letter D refers to perfectly colorless stones, the rarest and most expensive. Below we have the color E (exceptional white), F (extra white +), G (extra white), H (white), I-J (slightly tinted white), K-L (tinted white), M-N-O-P-R-S-Z (tinted).



Purity is evaluated according to the amount of inclusions present in a diamond. Almost all diamonds have inclusions within them, sometimes referred to as "fingerprints of nature". They are natural identifying features, such as minerals or fractures, which appear during the formation of diamonds underground. They can be in the form of small crystals, clouds or feathers, however normally not visible to the naked eye. To see the inclusions the jewelers must make use of a magnifying glass that allows them to see a diamond magnified 10 times in order to better locate the inclusions. The location of an inclusion can help determine the value of a diamond. There are very few diamonds in nature that are completely free of imperfections and these are therefore extremely valuable. Inclusions are rated on a scale of perfection, known as purity, established by the Gemological Institute of America (GIA). Some inclusions may be hidden by the setting and therefore have little effect on the beauty of the stone. An inclusion in the center or on the diamond table could affect the scattering of light, thereby decreasing the brightness of the stone. The higher the clarity of the diamond, the greater the brilliance, value and rarity of the stone.



The cut is the only one of the 4Cs to be influenced by the hand of man. Based on mathematical formulas, a well-cut diamond will reflect the light internally from one facet to the other like in a mirror and then scatter it and reflect it through the crown and the table.

The cut can also refer to the shape, for example round, square, teardrop, heart.
Since a round diamond is symmetrical and able to reflect practically all the light that enters it, this is the shape with the greatest brightness and follows specific guidelines regarding proportions.


NB: Difference between diamond and brilliant

Many people confuse the word "diamond" with the word "brilliant". The Diamond is the precious stone of extreme value; the brilliant is a type of cut (the round cut) which due to its characteristics allows the best shine. So any stone, for example zircon, can have a brilliant cut, but it has nothing to do with the diamond stone.

Value and origins of diamonds

The value of a diamond depends on its weight and quality, but not proportionally. The higher the cartura, the rarer the stone and therefore its value increases considerably. Two stones of equal weight can have two completely different values if they do not have the same characteristics of purity, color and cut. The most important deposits are found in India, Brazil and South Africa. Diamond veins can also be found in the countries of the former Soviet Union. The largest diamonds found so far are the Cullinan (South Africa) of 3106 carats, the President Vargas (Brazil) of 726.60 carats, the Grand Mogol (India) of 246 carats. All stones of inestimable value.

Cleaning and storage

We can certainly consider the diamond the gem of gems, to keep its beauty and value unchanged over time, just a few tricks are enough. Periodically, the jewels should be washed in warm water with a common degreasing detergent, washing with the aid of a brush with soft bristles. Rinse thoroughly, always using the toothbrush. It is a good idea to keep the jewels inside their containers. When this is not possible, it is advisable to keep them, avoiding rubbing between them. These simple treatments will keep your jewelry better over time. Small or large, a jewel is something that lasts over time, because happiness is in the memories.