The word diamond means etymologically unchanging or invincible which is not surprising given its high hardness. Most diamonds are formed under conditions of extreme pressure and temperatures, existing at depths of 140 km to 190 km in the earth's mantle.
The quality of a diamond is defined by its main characteristics:
Color, purity and size
- The color of a diamond measures its degree of transparency and influences its beauty.
- The purity of a diamond is determined by the size and position of its internal marks in inclusions, and they are only observed if augmentation methods are used.
- Classification of diamonds according to their size: