lgi diamond certificate (interpretation of igi diamond certificate)

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List of contents for this article:

• 1、What does the custom diamond ring book lGI mean?
• 2、How to see whether a diamond is real or false?
• 3、What is cultivating diamonds?
• 4、How to identify diamonds

What does the custom diamond ring book lGI mean?

Igi is a certificate from the Belgian Gemological Institute. The evaluation criteria for this certificate are different from some domestic standards, resulting in only 65% of the diamonds with this certificate passing the domestic inspection rate. It is best for the diamonds to choose the certificate to have a certified national inspection certificate. Let's see if the two diamonds are generally the same. It is best to choose a gia certificate when choosing a customized diamond ring. This certificate is basically the same as the domestic standard, but there are still subtle differences in evaluation methods. The pass inspection rate has reached more than 95.

The LGL certificate on the diamond ring is the diamond quality certificate issued by the world-renowned diamond testing and evaluation agency LGL. The following is a detailed explanation of the LGL certificate: Authority and credibility: The LGL certificate is an authoritative proof of diamond quality. Diamonds with this certificate have a high degree of credibility and value preservation in the market.

Diamonds are one of the precious gemstones. In order to prove the quality and value of diamonds, many diamond chambers of commerce choose to pass authoritative testing and evaluation and issue certificates as proof. LGL is one of the world-renowned diamond testing and evaluation agencies. Diamonds that recognize LGL certificates have a high degree of credibility and value preservation in the market. The LGL certificate is not only an identification certificate of the diamond, but also an identification certificate of the diamond.

Clarity: The certificate will describe the clarity level of the diamond in detail, including inclusions and surface flaws. Some certificates will also include a clarity diagram. Cutting: Cutting levels will be subdivided into several aspects, from high to low, they are divided into excelent, VERY GOOD, FAIR, POOR, etc. The cutting with perfect cutting and best response to fire color is the standard bright style.

This should represent the color grade of the diamond. The GIA (American Gemological Institute) divides it into 11 grades from high to low, namely D, E, F, G-H, I-J, K~M and N-Z. Grade F: considered colorless, high-quality diamonds, with a small amount of color that can only be detected by jewelry experts; Grade G~H: nearly colorless. When compared to higher-color diamonds, they have a slight color and still have a high value.

How to see whether a diamond is real or false?

The main methods to distinguish whether a diamond is true or false include the following: Use a jewelry magnifying glass to observe flaws and colors: Natural diamonds usually have some tiny flaws, and the colors may have subtle differences. These features can be observed through a jewelry magnifying glass, while synthetic diamonds or imitations may appear too perfect.

Determining the authenticity of diamonds can be comprehensively judged by the following methods: Hardness test Diamonds are the hardest substances in nature, with a Mohs hardness of 10. Diamonds can be used to scratch glass bottles. Real diamonds will easily leave clear and deep scratches, and the greater the force, the more obvious the scratches are; although fake diamonds (such as synthetic cubic zirconia, with a Mohs hardness of about 8) can also scratch glass, but require more force and shallower scratches.

There are several methods to distinguish whether a diamond is true or false: Line identification method operation: Place the bottom of the diamond on a piece of white paper with black lines painted on it, and observe it vertically through the diamond table. Judgment: If the diamond cutting standard has a high refractive index, no black lines can be seen. For imitations with lower refractive index, some curved black lines may be seen. Operation of breath identification method: Take a breath into the diamond and observe the dissipation speed of water vapor on the diamond surface.

What is cultivating diamonds?

What is cultivated diamonds: Cultivated diamonds are diamonds cultivated by laboratories using professional equipment. The professional name is synthetic diamonds.

Diamond rings are cultivated by using artificial diamond inlays in the laboratory, not naturally mined diamond jewelry. The essence of cultivating diamonds is a simple carbon substance that is completely consistent with the chemical composition and physical structure of natural diamonds. It is manufactured only by simulating the natural diamond-forming environment of high pressure and high temperature deep in the earth in the laboratory. Common synthesis methods include high temperature and high pressure (HPHT) and chemical Vapor deposition (CVD).

Currently, the main producing areas of natural diamonds include South Africa, Australia and Russia.

How to identify diamonds

1. Several methods to identify whether a diamond is true or false include observing flaws, single refraction test, fog test, dripping method, hardness test, temperature sensing, and viewing the base and ring. Observing flaws: Use a jewelry magnifying glass to view diamonds. Natural diamonds usually have some minor flaws, which are characteristic of natural gemstones. If the diamond looks too flawless, especially if it is relatively inexpensive, it is likely to be fake.

2. The methods to distinguish between true and false diamonds mainly include the following: Use a jewelry magnifying glass to observe flaws and colors: Natural diamonds usually have some tiny flaws, and the colors may have subtle differences. These features can be observed through a jewelry magnifying glass, while synthetic diamonds or imitations may appear too perfect.

3. Through the above eight methods, the authenticity of diamonds can be accurately identified.