Paying top dollar

for your diamonds since 1980

How to Get GIA Certification

Posted on April 7th, 2025 by JoeG

Understanding the Gold Standard in Diamonds

When buying or selling a diamond, one of the most important factors in determining its value is its certification. A GIA certificate is considered the gold standard in the diamond industry, offering buyers and sellers confidence in a stone’s quality and authenticity. But what is a GIA diamond certificate, and why does it matter? If you’re looking to sell a diamond, understanding GIA diamond certification can help you get the best price for your stone.

In this guide, we’ll break down everything you need to know about GIA certification, including how to obtain one, what it covers, and why it’s essential for anyone buying or selling diamonds.

What Is a GIA Diamond Certificate?

A GIA certificate, also known as a GIA diamond certification, is an official document issued by the Gemological Institute of America (GIA). This certification provides a detailed analysis of a diamond’s quality, characteristics, and authenticity. It is widely recognized as the most reliable and accurate diamond grading system in the world.

The GIA certificate evaluates a diamond based on the 4Cs:

  1. Carat Weight – The size of the diamond, measured in carats.
  2. Cut – How well the diamond has been shaped and faceted.
  3. Color – The absence of color in white diamonds, graded from D (colorless) to Z (light yellow).
  4. Clarity – The presence of internal or external imperfections, known as inclusions and blemishes.

Additionally, a GIA diamond certification will often include details about fluorescence, symmetry, and polish, all of which affect a diamond’s overall value.

Why Is GIA Certification Important?

Whether you’re buying or selling a diamond, having a GIA certificate ensures transparency and fairness in the transaction. Here’s why it matters:

Guarantees Authenticity – A GIA diamond certification confirms that the stone is a natural diamond and not a synthetic or lab-created gem.

Provides Accurate Grading – Because GIA certification follows strict grading criteria, it prevents exaggeration or misrepresentation of a diamond’s quality.

Increases Resale Value – Diamonds with a GIA certificate are more desirable to buyers and tend to sell for higher prices than uncertified stones.

Helps Buyers and Sellers Make Informed Decisions – The detailed report helps both parties understand the diamond’s actual worth and prevents overpaying or underselling.

How to Get GIA Certification for Your Diamond

If you have a diamond that you want to certify, you’ll need to send it to the Gemological Institute of America (GIA) for grading. Here’s how the process works:

Step 1: Prepare Your Diamond

  • Ensure that your diamond is clean and free of dirt or oil, as this can affect grading.
  • Remove the diamond from any setting (if applicable) because GIA only grades loose stones.

Step 2: Submit Your Diamond to GIA

  • You can submit your diamond directly to a GIA laboratory, or you can use a jeweler or diamond dealer to facilitate the process.
  • You will need to fill out a service request form, selecting the type of GIA diamond certification you want.

Step 3: Diamond Grading Process

  • The GIA laboratory will examine your diamond using advanced tools and techniques to determine its cut, clarity, color, and carat weight.
  • Experts will assess the stone’s proportions, symmetry, polish, and fluorescence.

Step 4: Receive Your GIA Certificate

  • Once grading is complete, GIA will issue a certificate that provides all the necessary details about your diamond.
  • You will receive a physical and/or digital copy of the certification for your records.

This entire process can take several weeks, depending on the lab’s workload.

How Much Does a GIA Diamond Certification Cost?

The cost of GIA certification varies based on the size and type of diamond. On average:

  • Small diamonds (under 1 carat) – $50 – $100
  • Larger diamonds (1-3 carats) – $100 – $300
  • High-carat diamonds (3+ carats) – Can exceed $500

While this may seem like an additional expense, having a GIA certificate can significantly increase the value of your diamond when selling.

GIA Certification vs. Other Grading Reports

While GIA certification is considered the most reputable, other organizations also offer grading reports. These include:

  • AGS (American Gem Society) – Similar to GIA but uses a slightly different grading scale.
  • IGI (International Gemological Institute) – Often used by commercial retailers but considered less strict than GIA.
  • EGL (European Gemological Laboratory) – Sometimes seen as inconsistent in grading accuracy.

Among these, GIA remains the most respected and reliable certification in the diamond industry.

Selling a Diamond with a GIA Certificate

If you’re looking to sell a diamond, having a GIA certificate can make the process much easier. Buyers are far more likely to purchase a certified diamond because they can trust the accuracy of the grading report.

A GIA-certified diamond typically sells for more than a non-certified one because buyers know exactly what they are getting. This eliminates doubt and increases buyer confidence.

Chicago Gold Gallery: The Best Place to Sell Your GIA-Certified Diamond

If you have a GIA-certified diamond and are looking to sell it for the best price, Chicago Gold Gallery is the premier place to do so. We specialize in buying diamonds, and our experts understand the true value of certified stones.

Even if your diamond isn’t certified yet, we can evaluate it and guide you through the process of obtaining GIA certification if necessary. With decades of experience and a strong reputation in the industry, Chicago Gold Gallery offers fair, competitive prices for diamonds of all shapes and sizes.

Ready to sell your diamond? Contact Chicago Gold Gallery today for a free evaluation!

Final Thoughts

A GIA certificate is essential if you want to sell a diamond with confidence. Understanding what a GIA diamond certificate is and how to get GIA certification can make a significant difference in the price you receive. Diamond GIA certification provides assurance to buyers and sellers alike, making transactions smoother and more profitable.

If you’re considering selling a GIA-certified diamond, trust Chicago Gold Gallery to offer the best price and a seamless selling experience. Contact us today to learn more!

← Back

Customer Testimonial

Had a Great Experience

I have dealt in coins and metals since the 80s. Had dealings with many dealers. Got scammed by a few. Chicago Gold is the only one I would recommend to my family or friends. Have your valuables appraised by them before you sell.


Date: 05/12/2022 • 5 / 5 stars ★★★★★

Awesome place!

What a super knowledgeable gemologist. After all that experience also they are soooo willing to help and answer all the questions I had. Excellent experience. They went above and beyond for me. Highly recommended. Super trustworthy.


Date: 01/20/2022 • 5 / 5 stars ★★★★★

I'll be back

Cashed in some silver coins and received a very fair exchange. Joe and Chris, were very friendly, and comfortable to deal with. Came back with some jewelry, and received a rough appraisal...again no pressure.


Date: 10/17/2023 • 5 / 5 stars ★★★★★

I would do business with them again

Good people who are honest, open and friendly. I'm glad I found them and not too far from my area.


Date: 01/02/2024 • 5 / 5 stars ★★★★★

How to Reach Us?

Get Directions

Contact Us

Get the most for your valuables.

1236 W. Devon Avenue
Chicago, IL 60660

Phone: 773-338-7787 Email: chgogoldgallery@aol.com

Hours: Mon- Fri: 10:15am-6pm, & Sat: 10:15am-5:00pm

Especially Wanted

  • Gold & Silver Coins
  • Bullion Gold, Silver, & Platinum
  • Scrap & Old Gold
  • Sterling Silverware
  • Dental Gold
  • Coins & Coin Collections
  • Franklin Mint
  • Collectibles
  • Rare Coins
  • Antique & Modern Jewelry
  • Diamonds
  • Watches - Rolex, Patek Philippe
  • Broken Jewelry
  • Tiffany & Company - Cartier
  • Vintage & Modern Guitars