DIAMONDS

The diamonds are minerals made of crystallized carbon, for particular geothermal conditions, millions of years ago in the bowels of the earth. A very high pressure, at about 150-200 km of depth, and a temperature of over 1200 degrees allowed the carbon to crystallize in diamond. Thanks to the volcanic eruptions, the rough crystals have reached the earth’s surface and, to date, represent the hardest ever raw material existing in nature. Adamas, the Greek word from which diamond is derived, means really hard.

HOW MUCH IS A DIAMOND?

The quality and value of a diamond are classified according to four criteria (also called the 4 C of the diamonds, from the English words Carat, Cut, Clarity and Color):

1. Carati
2. Cut
3. Purity
4. Color

Carat of
1 carat diamonds corresponds to a fifth of a gram (0.2 g) and is the unit of weight with which a diamond is measured. A 1 carat diamond weighs 100 points. The abbreviation is Ct.

Cutting diamonds
The cutting of diamonds is evaluated according to 4 values :

• Excellent : when the diamonds optimally reflect the light, determining its brilliance. These diamonds are quite rare.
• Excellent : even the diamonds of this category have a high degree of cut and better reflect the light.
• Good : the diamonds of this category are a bit ‘less bright and vivid, but they are of good quality.
• Discreet : In this case, the diamonds reflect less light and are less bright.

Purity of the diamonds
The scale of purity of diamant the counts six main values, from FL-IF up to I2-I3 and which takes into account the clarity of the diamond inside and on the surface, as well as the presence or absence of any visible stains with the magnifying glass and / or the naked eye.

Color of diamonds
The color of colorless diamonds is evaluated with the letters of the alphabet from D to J , considering the presence or absence of a white or yellow tint. The greater the transparency, the greater the value : those from D to F are rarer, and almost always used for fine jewelry. From G to J the color is increasing and from K to Z we talk about colored diamonds, that is light yellow.