How to verify a GIA certificate?

The GIA certificate (or a certificate from another gemological laboratory) is a good way to verify the authenticity of a diamond. To check your diamond's certificate, simply enter your certificate number in the interactive form below: Verify my certificate in the GIA database You may also access our GIA diamond price guide Our customer service team is available free of charge to assist you with the purchase of your diamond.

Need help appraising your jewelry?

• No appointment needed: 43 Rue Beaubourg, 75003 Paris

Where to find my GIA certificate number?

• Your certificate number (GIA Report Number) can be found on:
• Your GIA certificate (see photo above)
• Engraved on your diamond (visible by a diamond expert)
• Your purchase invoice

Free Assistance:

43 RUE BEAUBOURG 75003 No appointment needed

The GIA certificate, your diamond's identity card

What is the price of a 5-carat diamond?

Sell your 5-carat diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish

What is the price of a 4-carat diamond?

Sell your 4-carat diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish

What is the price of a 3-carat diamond?

Sell your 3-carat diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish

What is the price of a 1-carat diamond?

Sell your 1-carat diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish

What is the price of a 2-carat diamond?

Sell your 2-carat diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish

If you buy a diamond of 0.3 carats or more, it is very likely to come with an authentication certificate. This certificate may be issued by one of the most reputable independent gemological laboratories, such as the GIA, IGI, or the French Gemological Laboratory. It in some ways constitutes your diamond's identity card: it includes the diamond's characteristics (notably the 4Cs) and justifies the diamond's price. Hence, it is a precious document.

The GIA certificate, your diamond's identity card

It is not enough to ensure that the diamond is sold with an authenticity certificate. Some fraudsters do not hesitate to falsify a GIA certificate to make their diamond appear real, when it is actually a fake. So, how can you tell if the GIA certificate of the diamond you wish to buy is genuine? To verify a GIA certificate, you should examine the following elements:

• The laser engraving must match the certificate's report number (for larger, high-quality diamonds). This engraving is found on the diamond's girdle.
• The certificate establishes the diamond's "fingerprint," meaning it maps out the inclusions and their arrangement within the diamond. You can compare the diamond's inclusions (under a 10x magnifying loupe or with the naked eye depending on the diamond's clarity grade) with those indicated on the certificate. If all inclusions match, then it is very likely that the GIA certificate is genuine.
• Like a banknote, a GIA certificate features details that are difficult to replicate identically, such as holograms, special ink impressions, tamper-proof background prints, or other details that the laboratory does not disclose to prevent reproduction.

If all these elements are present and correspond to the certified diamond, then your GIA certificate is authentic and your diamond is not a fake. You may then proceed with the purchase without any worries! Guide – Diamond Shape

Sell your diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish to sell it? Appraisal

Guide – Diamond Color

Sell your colored diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish

Guide – Diamond Price

Sell your diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish to sell it? Appraisal

Guide – VVS Clarity Diamond

Sell your VVS diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish to

At Diamantaire Paris, we understand the importance of trust and authenticity in the world of high jewelry. That is why we make it a point to use the services of the GIA to verify each GIA certificate, thus ensuring the utmost transparency and reliability for our clients. Our expertise is not limited to diamond appraisal; we also offer personalized advice on what to do with inherited jewelry, taking into account their sentimental and market value. We take pride in our jewelry expertise originating from Place Vendôme, a guarantee of our commitment to excellence and quality. For those looking to sell high jewelry pieces, we offer exquisite collections such as Van Cleef & Arpels Couture, Van Cleef & Arpels Lotus, and Van Cleef & Arpels Olympia, thus providing a diverse range to suit the most refined tastes. For those considering alternatives to traditional auction houses, we offer options such as our alternative to Sotheby's or our alternative to Doyle New York for selling your jewelry. These services are designed to provide a more personalized and intimate selling experience. Furthermore, our expertise extends to specific periods, as evidenced by our services for selling 18th-century jewelry or appraising antique rings. We understand the historical and artistic value of these pieces and are committed to obtaining the best price for our clients. Visit our jewelry store in Paris or our homepage to learn more about our services and discover how we can help you value and sell your precious jewelry and diamonds. How can I verify the authenticity of a GIA certificate for a diamond? To verify a GIA certificate, you can enter the certificate number in an interactive form on the Diamantaire Paris website. This number can be found on your GIA certificate, engraved on the diamond itself, or on your purchase invoice. What elements should I examine to confirm the authenticity of a GIA certificate? Check that the laser engraving on the diamond matches the certificate's report number. Also, compare the inclusions indicated on the certificate with those of the actual diamond. Finally, look for security features on the certificate, such as holograms or special prints. Can I get assistance with appraising my jewelry at Diamantaire Paris? Yes, Diamantaire Paris offers free assistance for jewelry appraisal. You can contact them at 01 48 87 23 37 or visit their boutique at 43 rue Beaubourg, 75003 Paris, without an appointment. Does Diamantaire Paris offer services other than diamond appraisal? Yes, they offer a range of services, including advice on what to do with inherited jewelry, selling high jewelry pieces, and alternatives to traditional auction houses. They also have expertise in 18th-century jewelry and antique rings. Where is Diamantaire Paris located and how can I contact them? Diamantaire Paris is located at 43 Rue Beaubourg, 75003 Paris. You can contact them by phone at 01 48 87 23 37 or by email at [email protected]. They are open Monday to Friday from 10am to 1pm and from 2pm to 6:30pm.

The GIA certificate (or a certificate from another gemological laboratory) is a good way to verify the authenticity of a diamond.
To check your diamond's certificate, simply enter your certificate number in the interactive form below: 

Verify my certificate in the GIA database

-> You may also access our GIA diamond price guide Assistance at:
Our customer service team is available free of charge for the appraisal of your jewelry.

Where to find my GIA certificate number?

• Your certificate number (GIA Report Number) can be found on:
• Your GIA certificate (see photo above)
• Engraved on your diamond (visible by a diamond expert) 
•  Your purchase invoice 

Free Assistance:
43 RUE BEAUBOURG 75003
No appointment needed

The GIA certificate, your diamond's identity card

What is the price of a 5-carat diamond?

Sell your 5-carat diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish

What is the price of a 4-carat diamond?

Sell your 4-carat diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish

What is the price of a 3-carat diamond?

Sell your 3-carat diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish

What is the price of a 1-carat diamond?

Sell your 1-carat diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish

What is the price of a 2-carat diamond?

Sell your 2-carat diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish

If you buy a diamond of 0.3 carats or more, it is very likely to come with an authentication certificate. This certificate may be issued by one of the most reputable independent gemological laboratories, such as the GIA, the IGI, or the French Gemological Laboratory. It in some ways constitutes your diamond's identity card: it includes the diamond's characteristics (notably the 4Cs) and justifies the diamond's price.

The GIA certificate, your diamond's identity card

It is not enough to ensure that the diamond is sold with an authenticity certificate. Some fraudsters do not hesitate to falsify a GIA certificate to make their diamond appear real, when it is actually a fake. So, how can you tell if the GIA certificate of the diamond you wish to buy is genuine?

To verify a GIA certificate, you should examine the following elements:

• The laser engraving must match the certificate's report number (for larger, high-quality diamonds). This engraving is found on the diamond's girdle.
• The certificate establishes the diamond's "fingerprint," meaning it maps out the inclusions and their arrangement within the diamond. You can compare the diamond's inclusions (under a 10x magnifying loupe or with the naked eye depending on the diamond's clarity grade) with those indicated on the certificate. If all inclusions match, then it is very likely that the GIA certificate is genuine.
• Like a banknote, a GIA certificate features details that are difficult to replicate identically, such as holograms, special ink impressions, tamper-proof background prints, or other details that the laboratory does not disclose to prevent reproduction.

If all these elements are present and correspond to the certified diamond, then your GIA certificate is authentic and your diamond is not a fake. You may then proceed with the purchase without any worries!

Guide – Diamond Shape

Sell your diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish to sell it? Appraisal

Guide – Diamond Color

Sell your colored diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish

Guide – Diamond Price

Sell your diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish to sell it? Appraisal

Guide – VVS Clarity Diamond

Sell your VVS diamonds with Diamantaires Paris today 01 48 87 23 37 Sell Do you own a diamond and wish to

How can I verify the authenticity of a GIA certificate for a diamond?

To verify a GIA certificate, you can enter the certificate number in an interactive form on the Diamantaire Paris website. This number can be found on your GIA certificate, engraved on the diamond itself, or on your purchase invoice.

What elements should I examine to confirm the authenticity of a GIA certificate?

Check that the laser engraving on the diamond matches the certificate's report number. Also, compare the inclusions indicated on the certificate with those of the actual diamond. Finally, look for security features on the certificate, such as holograms or special prints.

Can I get assistance with appraising my jewelry at Diamantaire Paris?

Yes, Diamantaire Paris offers free assistance for jewelry appraisal. You can contact them at 01 48 87 23 37 or visit their boutique at 43 rue Beaubourg, 75003 Paris, without an appointment.

Does Diamantaire Paris offer services other than diamond appraisal?

Yes, they offer a range of services, including advice on what to do with inherited jewelry, selling high jewelry pieces, and alternatives to traditional auction houses. They also have expertise in 18th-century jewelry and antique rings.

Where is Diamantaire Paris located and how can I contact them?

Diamantaire Paris is located at 43 Rue Beaubourg, 75003 Paris. You can contact them by phone at 01 48 87 23 37 or by email at [email protected]. They are open Monday to Friday from 10am to 1pm and from 2pm to 6:30pm.

At Diamantaire Paris, we understand the importance of trust and authenticity in the world of high jewelry. That is why we make it a point to use the services of the GIA to verify each GIA certificate, thus ensuring the utmost transparency and reliability for our clients. Our expertise is not limited to diamond appraisal; we also offer personalized advice on what to do with inherited jewelry, taking into account their sentimental and market value.

We take pride in our jewelry expertise originating from Place Vendôme, a guarantee of our commitment to excellence and quality. For those looking to sell high jewelry pieces, we offer exquisite collections such as Van Cleef & Arpels Couture, Van Cleef & Arpels Lotus, and Van Cleef & Arpels Olympia, thus providing a diverse range to suit the most refined tastes.

For those considering alternatives to traditional auction houses, we offer options such as our alternative to Sotheby's or our alternative to Doyle New York for selling your jewelry. These services are designed to provide a more personalized and intimate selling experience.

Furthermore, our expertise extends to specific periods, as evidenced by our services for selling 18th-century jewelry or appraising antique rings. We understand the historical and artistic value of these pieces and are committed to obtaining the best price for our clients.

Visit our jewelry store in Paris or our homepage to learn more about our services and discover how we can help you value and sell your precious jewelry and diamonds.