The 4"C"s of Diamonds

Color | Cut | Clarity | Carats

For most people, buying a diamond is a new experience. The process of understanding the qualities of a diamond is simple but important. In a few minutes you'll learn everything you need to know, that will help you find the perfect diamond for you.

  • By Color is described the absence of color of a diamond. In other words, diamonds that are white, receive higher quality levels than those with visible color.                                                                        
  • With the term Cut Grade is described the return of light from the surface of the diamond. In simple words, the better a diamond is cut, the more sparkle it will have.                                                         
  • Almost all diamonds have tiny flaws within them. Diamonds with few or no imperfections receive the highest score on purity levels (Clarity Grades).                                                                                    
  • Carat weight is the unit of measurement used in precious stones. One carat equals 1/5 of a gram, which means that 1ct =0,20gr.                


For more details:


Diamonds are divided into three color categories: brightly colored diamonds (the 'fancy' diamonds, as they are called worldwide), diamonds with color hue and colorless diamonds. Of these the rarest and with the highest value are the fancy diamonds. It is very difficult to find in nature a big, clean and brightly colored diamond. For this reason the fancy diamonds are excluded and not classified in purchasing rating categories like colorless diamonds.

Actually, when we refer to the evaluation of diamonds in terms of color, we are talking about colorless diamonds and, when we say that a diamond belongs the color class F we mean how colorless it is and not what color it has and at what intensity.                                                                                                                    The colour is rated and described by the letters D, E, F corresponding to completely colorless diamonds. The letters G, H, I, J correspond to almost colorless diamonds. The K, L, M to diamonds with slight color tint. The N, O, P, Q, R to diamonds with very light color tint and finally the S, T, U, V, W, X, Y and Z in the diamond light-colored complexion. In official lists you can find instead of the word "color", the word yellow, which means, slight yellow tint, very light yellow color and slight yellow tint. Of course they are not referring only to the yellow tint, but in every color hue. The yellow tint is just the most common.

 CUT : 

With the term Cut, we mean the shape we give to the crystal, the polishing and the proportions of the cutting structures.

In its natural state, the beauty of a diamond is hidden in general. Although the nature determines the purity of the color and its carats, it is necessary the hand of a specialist who will free the glow and beauty. What increases the brilliance of a diamond is its cut, which under ideal conditions increases the optical properties of the inside of the diamond, in particular its ability to refract light and to disperse the color. It should be however noticed that the cut, is referred to the regulation of the diamond's facets and the shape. The diamond with the perfect cut, captures and delivers the maximum energy of the radiation. The cut gives each diamond unique glow to allowing the maximum amount of light to enter and be reflected by the diamond.

To achieve optimum cut, the artisan must face a series of tolerance factors of the stone. More specifically, this means that the hardest part of the diamond should be cut and removed. For this reason, the ideal cut diamond is more an exception than the rule. In fact, less than 1% of diamonds have the perfect cut. Therefore, flawless cut diamonds can only be found at the finest jewelry stores. If the cut is too deep or too shallow, the light will go to the bottom of the diamond and will be lost. As a result there is a less brilliant appearance and a diamond of lower value. The cut is what receives the more critics comparing to other variables regarding the influence in the diamond's value. It is necessary to know the quality of the cut when buying a diamond.

The round diamonds are symmetrical and capable of reflecting the maximum amount of light. They are the brightest of all the other diamond shapes.



Clarity is the translucence. By which we mean the absence of internal or external factors affecting the purity of diamonds, so that it is clear without any inclusion, without any scratch or fracture or any flaw that would affect their clarity.

With the term translucence we mean that the light passes freely from the transparent inner of the stone without obstacles and interference so that anyone can clearly observe through the stone body. Inclusion is any foreign body that may exist inside the crystal of diamond. Foreign body may be the crystal of another mineral, the rock fragments harboring the diamonds etc. As an inclusion is also considered an internal fracture of the crystal, an apparent imperfection etc. Many times it has been observed a tiny diamond crystal to exist as included in a large diamond. In inclusions we classify the scratches, fractures and defects of the external surface of a faceted and polished crystal.

Of course, before you question yourself, we add that the observation of the interior and exterior of the stone to test the clarity and translucence of the diamond, is made by a specific magnification, x10 times. The direction of the observation is better from the top of the stone, specifically from the facet "table".



The 4"C"s of Diamonds