What Is a GRA Certification Report? How to Read It & In-Depth Analysis
Key Takeaways
- At Jemmia, we always encourage customers to clearly understand the importance of GRA certification in order to make smart and safe purchasing decisions. In this article, Jemmia will provide you with all...
At Jemmia, we always encourage customers to clearly understand the importance of GRA certification in order to make smart and safe purchasing decisions. In this article, Jemmia will provide you with all the necessary information about the GRA certificate, helping you easily check and verify the quality of this gemstone through this certificate.
What is a GRA certificate?
The GRA certificate provided by the Gemological Research of America (GRA) is a certification document that assesses the quality and authenticity of gemstones, especially Moissanite stones and other synthetic gemstones.
GRA was established in 2001 and has become a reputable standard in the gemstone industry. This certificate provides detailed information about the gemstone such as weight, color, clarity, cut, and other parameters related to the quality of the stone.
Each gemstone certified by GRA has a code engraved on the girdle, making it easy for buyers to verify the product information.

What is the GRA certificate used for?
The GRA certificate plays an important role in the process of buying, selling, and authenticating gemstones. It helps consumers feel assured about the origin and quality of the product, avoiding the purchase of fake or low-quality gemstones.
The GRA certificate provides full information about the stone, helping buyers easily compare and verify it with the information provided on GRA’s official website. This ensures transparency in transactions and increases the ability to resell the product when needed.
GRA grading criteria
Like GIA, the GRA organization also applies an international standard system to assess the quality of diamonds or moissanite. These criteria not only help determine the value of the stone but also serve as a basis for buyers to distinguish genuine from fake and choose the right product. Below is a summary table of common GRA grading criteria:
Detailed guide to reading a GRA certificate
When receiving a GRA certificate, buyers will see many important parameters used to evaluate the gemstone. Below is how to read the basic information on the certificate:
| Parameter | Detailed parameter | Meaning | Example |
| GRADING REPORT | GRA Report Number | Authentication code | 2018021501 |
| Cutting Style and Shape | Cutting style and shape | Round Brilliant | |
| Measurements | Specific dimensions | 8 mm | |
| GRADING RESULTS | Carat Weight | Carat weight | 2 carat |
| Color Grade | Color grade | D | |
| Clarity Grade | Clarity assessment | VVS1 | |
| Cut Grade | Cut quality | Excellent | |
| ADDITIONAL GRADING INFORMATION | Polish | Polish level | Excellent |
| Symmetry | Symmetry | Excellent | |
| Fluorescence | Fluorescence | None | |
| Inscription | Laser inscription code on the stone | GRA 2018021501 | |
| Notes | Diamond weight is same like Real weight - 2 Carat (The weight of a real diamond of the same size is equivalent to 1.8 carats) | ||
| PROPORTIONS | Cut proportions | ||
| CLARITY CHARACTERISTICS | Clarity characteristics | ||
How to read a GRA certificate in detail
How to check a GRA code
To verify the GRA code of a gemstone, you just need to follow these steps:
- Visit the website http://www.gra-test.com/.
- Enter the code engraved on the girdle of the gemstone into the “CODE” section.
- Click search. If the gemstone has been authenticated by GRA, the related information will be displayed. Otherwise, if there is no information, that stone may not be a genuine product.
Which organization can provide a GRA certificate?
The GRA certificate is issued by the Gemological Research of America, an internationally reputable organization in the certification of lab-grown diamonds.
In addition, other organizations such as GIA (Gemological Institute of America) and AGS (American Gem Society) are also famous for diamond certificates. In Vietnam, some domestic organizations such as SJC, PNJ, and GIV also provide certificates, but their credibility is not as high as that of international organizations.
See more: What are blood diamonds? The truth no one has revealed about blood diamonds
How much does GRA certification cost?
The cost of diamond grading and issuing a GRA certificate ranges from 60,000 to 120 million VND, depending on the size of the stone. The larger the diamond, the higher the grading cost due to the complex grading process and high accuracy requirements.
Distinguishing between GRA and GIA certificates
How long does it take to get a GRA certificate?
The grading time to issue a GRA certificate usually takes about 48 hours in the Vietnamese market. However, this time may be longer for larger diamonds or Moissanite stones, or if more detailed examination of the stone’s characteristics is required.

The grading time to issue a GRA certificate usually takes about 48 hours in the Vietnamese market
If there is no GRA certificate, is there any problem with the diamond?
Buying a gemstone without a GRA certificate can lead to significant risks regarding the product’s quality and value. Without a certificate, buyers may find it difficult to verify the origin and accurate information of the stone, increasing the chance of purchasing fake or low-quality goods. This is especially important for high-end diamond jewelry, because transparency and quality assurance are key factors in affirming the value of the jewelry piece.
Therefore, when buying gemstones, consumers should request a GRA certificate or other reputable certificates to protect their interests.
A GRA gemstone certificate is a key factor in confirming the quality and value of each gemstone. Understanding this certification not only helps you feel more confident when choosing a product but also protects you from risks related to fake or low-quality goods. Fully understanding the information on a GRA certificate will give you peace of mind and ensure that every decision to invest in gemstones is accurate, transparent, and worthy of the value you spend. Follow Jemmia to learn more about diamond knowledge.
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