Igi Vs Gia Lab Grown Diamonds: Which is the Best Choice for You?


In recent years, lab grown diamonds have become an increasingly popular alternative to natural diamonds. This is due to a variety of factors, including their affordability and ethical sourcing. However, with so many options available on the market, it can be difficult to know which lab grown diamond certification laboratory is the best choice for your needs. In this article, we’ll explore the differences between two of the most well-known certification laboratories – the International Gemological Institute (IGI) and the Gemological Institute of America (GIA).

What is a Lab Grown Diamond Certification?

Before we dive into the differences between igi vs gia lab grown, let’s first discuss what a lab grown diamond certification is, and why it’s important. A lab grown diamond certification is a document that provides information about the diamond’s quality, characteristics, and origin. It is issued by an independent third-party laboratory that specializes in diamond grading, and serves as a guarantee of the diamond’s authenticity, quality, and value.

A certification from a reputable laboratory also ensures that the diamond has been ethically sourced, and does not contribute to unfair labor practices or environmental damage. Additionally, it gives you peace of mind knowing that you’re getting what you paid for, and that you’re making an informed decision when purchasing a lab grown diamond.

IGI vs GIA: What are the Differences?

Now that we’ve established the importance of a lab grown diamond certification let’s explore the differences between GIA Vs IGI. Both organizations are highly respected in the diamond industry and have similar grading criteria. However, there are some important differences to consider when choosing between the two.


Both IGI and GIA have a reputation for excellence within the diamond industry. However, GIA is widely considered to be the gold standard of diamond certification laboratories. It was founded in 1931 and has since earned a reputation for its rigorous grading standards and unbiased approach.

IGI, on the other hand, is a newer organization that was founded in 1975. While it is also highly respected within the industry, it does not have the same level of recognition as GIA.

Grading Criteria

Both IGI and GIA use similar grading criteria to assess the quality and characteristics of a lab grown diamond. However, there are some subtle differences between the two.

For example, IGI uses a color grading scale that ranges from D (colorless) to Z (light yellow). GIA, on the other hand, uses a more extensive scale that includes color grades from D (colorless) to Z (light yellow), as well as grades for diamonds with a pink or blue hue.

Additionally, while both organizations use the 4Cs to evaluate a diamond’s quality (carat weight, cut, color, and clarity), they may place a slightly different emphasis on each of these factors.

Turnaround Time and Cost

Another important factor to consider when choosing between IGI and GIA is their turnaround time and cost. Both organizations offer a range of certification options with varying levels of detail and complexity. However, IGI tends to be less expensive than GIA, making it a more budget-friendly option for those who are looking to save money.

Additionally, IGI typically has a faster turnaround time than GIA. This means that you can receive your lab grown diamond certification more quickly with IGI than with GIA, which can be important if you’re working on a tight timeline.

Which Certification is Right for You?

Ultimately, the choice between IGI and GIA comes down to personal preferences and priorities. If you value a certification with a well-established reputation and a more extensive grading scale, then GIA may be the best choice for you. Additionally, if you’re willing to pay a premium price for the highest level of accuracy and detail, then GIA may be the way to go.

However, if you’re looking for a more affordable option that still offers quality certification, then IGI may be the better choice. Additionally, if you’re working on a tight timeline or need your certification quickly, then IGI’s faster turnaround time may be an important factor to consider.

Regardless of which certification laboratory you choose, it’s important to examine the details of the certification carefully. This will help you understand the quality and value of your lab grown diamond and ensure that you’re getting a diamond that meets your expectations.


Choosing between IGI and GIA can be a difficult decision when it comes to lab grown diamond certifications. Both laboratories are highly respected within the industry, and offer their own unique advantages. Ultimately, the decision comes down to personal preferences and priorities. By understanding the differences between these two organizations, you can make an informed decision about which lab grown diamond certification is the best choice for you.

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