How is diamond jewelry appraised? Automatic translate

Diamonds are among the most valuable stones in jewelry. They effectively complement rings, necklaces, watches and other accessories, giving them high value. If necessary, these stones can easily be pawned at a pawnshop and help out a considerable amount in a difficult life situation. However, it should be understood that the purchase of diamond jewelry is accompanied by a thorough evaluation, which protects the buyer from counterfeits.

Why is an assessment carried out?

Only a professional can evaluate gems correctly. Most often, when checking, the American GIA grading is used, which is based on four indicators - cut, weight, clarity and shade. The main tasks facing the expert include:

• identifying the authenticity of stones;
• identifying signs of diamond enhancement (improving color, clarity);
• establishing characteristics;
• comparison of the product with the accompanying documentation (certificates).

How are diamonds checked and graded?

Diagnostics of diamonds is carried out in stages. Special instruments can be used for checking, including polariscopes, scales, binocular microscope, and Leverage meter. If the stone is encased, it is first removed. In some cases, the diamond is left in the jewelry, and the cost is calculated using a formula taking into account carats, size and diameter.

Initially, the expert uses a magnifying glass, through which he determines the material and nature of the stone. If he is convinced that the jewelry contains a diamond and not a fake, then further assessment is carried out as follows:

1. The stone is weighed on electronic scales, thanks to which you can find out the weight of the product down to hundredths of a carat.
2. Using detectors, electrical and thermal conductivity is determined to eliminate the possibility of imitation.
3. Refinement is detected, which can be detected through cathode rays and UV lighting. If necessary, spectral optical equipment can be used.
4. The diamond is examined under a microscope to obtain information about the presence of inclusions, heterogeneous structure, and color distribution. Transparent (colorless) diamonds are considered the most valuable, although aquamarine, brown, lemon and other shades are also often found in jewelry.

The value of the jewelry depends on the assessment results. The more facets a diamond has, the larger and cleaner it is, the higher the price the pawnshop will pay upon redemption.