Diamond
A precious gemstone is formed by carbon sequestration, which has a crystalline structure. Diamonds are produced by the exposure of the carbon element to the high temperature and pressure factors in the ground. The diamond is distinguished by its transparent crystal mesh, which is unique to other gemstones.
Diamonds are different from other gemstones with only one element, while precious stones consist of a number of two or more elements. Diamonds are often extracted from volcanic regions. This is followed by the introduction of volcanic craters through the erupting lava; which is in the ground for a distance of more than 150 kilometers.
Purity of diamonds
Diamonds have four main characteristics: color, shape, purity and weight. The third characteristic of purity is the most important of these four properties because of the inability to observe and monitor only under the lens of a microscope specialized in it.
The purity of diamonds is defined as the degree of freeness of the small defects or impurities carried by the diamond parts in their folds, and it should be noted that all the pieces of diamonds contain small impurities and natural defects, except that type of diamonds is very rare. In the diamond, the less the impurities. In order to determine the purity of the diamond from the impurities, a special classification for the purity of diamonds was adopted based on the size of the impurities in them by increasing the size of ten times under the microscope.
Diamond purity
| Degree of purity | The flaw | Purity ratio |
|---|---|---|
| IF, LF | Free of impurities or low vision, so that it is magnified 10 times; however, the impurities are not vision-free, and thus have a very rare purity. | FL, with a percentage of impurities |
| VVS1, VVS2 | The percentage of impurities is very low, and this small percentage is very difficult after increasing the size of diamonds 10 times, and is very small. | VVS1: Disadvantages or impurities are located in the diamond base, ie at the bottom.
VVS2: The impurities are visible in the crown, ie, the upper part of the diamond. |
| VS1, VS2 | It has a very low impurity ratio, which can be seen a little after increasing the size of the diamond to 10 times. | VS1: Less purity than VS2.
VS2: has a purity ratio of more than VS1 |
| SI1, SI2 | Impurities can be seen and seen clearly when enlarging to 10 times. | SI1: Disadvantages may be invisible to the naked eye.
SI2: It is possible to see impurities with the naked eye. |
| I1 | The impurities can be seen with the naked eye clearly after enlarging the size to 10 times. | This type is free because it achieves I1 degree of purity not available in Blue Nile. |
| I2, I3 | The impurities are visible and can be seen in the naked eye after being enlarged 10 times in size. | – |