Laboratory Certification: The Process for Diamonds

Many consumers are interested in the steps that are taken when a diamond is certified in the laboratory. While much emphasis is placed on identifying a diamond and grading it, most people do not stop to contemplate how the process is facilitated. When you look at the process in phases, you can better understand the full worth of including a grading report from a laboratory.

Receiving a Diamond to Be Graded

Before a diamond is placed in the grading environment, it is received and validated. The receiving process is typically performed in a separate and secure area in front of a laboratory. At the receiving area, the diamond is compared against the packing slip and any discrepancies are noted.

If a diamond is received without problem, it is entered into a computer database and then assigned a unique number. The gem is then barcoded and tagged, which removes any details tied to a specific client. The diamond then enters the lab with complete anonymity. This important part of the process ensures unbiased grading and prevents any problems with over-grading a gem.

Therefore, Houston engagement rings that meet high-grading standards are ideal jewellery choices. Gems such as these enter a main grading area and are transported to a station that is equipped with various instruments. These instruments assist the operator in performing a series of tests and measurements.

Testing the Gem for Naturalness

The diamond is first weighed on a digital scale, where any incongruences are noted. The next step is to test the gem with an instrument that distinguishes it as natural, synthetic, or simulated. If the diamond tests positive for features that are not natural, the client is alerted before further work is performed.

If the diamond passes the test and is determined to be natural, a 3D image is taken of the stone. The data from this image includes measurements of each facet of the diamond, which are fed into a software program that calculates the gem’s light performance. A machine also tests the diamond’s colour grade.


Human Grading

After the diamond is assigned a colour grade, the gem is graded by humans. Colour, clarity, and cut, including symmetry and polish, are reviewed by people who have been professionally trained to grade diamonds. Each grader completes grading courses in which they are certified. The diamond is graded by several graders for an added measure of quality assurance and accuracy.

This type of grading process is done for companies who retail diamonds or work in the diamond industry. That is why it is important to choose a diamond retailer who fully understands the importance of grading, as well as the individual steps. Make sure that you are working with a retail specialist, who provides diamonds that are objectively graded and affordably priced.

Choosing an engagement ring is a major responsibility. Therefore, you want to make sure you understand the grading process, as well as the importance placed on colour, cut, and clarity. Learn more about diamond grading online and make sure you comprehend why your choice of diamond must be based on more than just personal preference.

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