GIA Thailand will be closed on Wednesday, December 31, 2025, and will resume service on Monday, January 5, 2026. 
จีไอเอ ประเทศไทย หยุดให้บริการในวันพุธที่ 31 ธันวาคม 2568 และจะเปิดให้บริการตามปกติในว...

Starting January 1, 2026, GIA will launch redesigned colored stone reports and expanded services. These updates build on GIA's extensive research sample collection and more than 75 years of colored st...

Now available in print and online: *Gems & Gemology* Fall ’25. This edition explores the formation of contact-twinned macle diamonds, revealing how different corner structures develop under changing c...

Join us for the GIA Gem Talk, "A Year at GIA Bangkok: Remarkable Gems from the Lab and Field" — reflections on 2025 and the interesting submissions we have seen at the GIA Bangkok Lab.

Speakers:
Aree...

Join GIA Gem Talk "Science Behind the Sparkle: Using Advanced Instruments for Colored Stones"

Presented by GIA Field Gemologist Wim Vertriest and GIA Colored Stones Gemologist Narint Jaisanit

Date: ...

Join GIA for a free seminar during the Bangkok Gems & Jewelry Fair!

“Science Behind the Sparkle: How Instruments Help Identify Gems, from Colored Stones to Diamonds”

Presented by GIA Senior Gemologi...

We Look Forward to Welcoming You!

Visit the GIA Show Service Laboratory at the 72nd Bangkok Gems & Jewelry Fair. Submit your gemstones for professional analysis by GIA gemologists at our on-site lab....

Now available in print and online: 𝙂𝙚𝙢𝙨 & 𝙂𝙚𝙢𝙤𝙡𝙤𝙜𝙮 Summer '25! This issue delves into the world of phenomenal gemstones, providing a comprehensive summary of their special optical effects ...

Limited-Time Offer: Priority Services for Colored Stones

Prepare for the upcoming Bangkok Gems and Jewelry Fair with this special limited-time offer: The GIA® Bangkok Laboratory is offering five busi...

Join us this September for the first-ever Converge! 💎🌴 We're bringing together the best of AGS Conclave and GIA Symposium for an unprecedented gathering of gem and jewelry industry professionals.

D...

GIA is offering a discount on volume submissions of Colored Stone Identification Reports and Colored Stone Identification & Origin Reports. The more colored stones you submit, the more you save with t...

Now available in print and online: Gems & Gemology Spring ’25! 📓 This issue features a captivating deep dive into the Winston Red diamond, the fifth-largest Fancy red diamond known to exist, detailin...

Join GIA Gem Talk "Hyperion: Siamese Twins" by Billie Hughes, Lotus Gemology Co. Ltd. On Wednesday, June 25, 6:00 - 7:30pm at GIA Bangkok, Mitrtown Office Tower, 19th Floor, GIA Diamond Room.

Registe...

🙂 Join us for an evening of purpose and connection at Nadimos Restaurant as a part of our “Beneath the Sparkle” campaign. This casual get-together will include a presentation by Wim Vertriest, GIA Ma...

Join GIA Gem Talk "Emerald Treatment & Paraiba Tourmaline."
By Wim Vertriest, GIA GG, FGA (Manager, Field Gemology)

Date & Time: March 26, 6:00 - 7:30 PM
At GIA Diamond Room, 19th Floor, Mitrtown Off...

Join us for the seminars during the 71st Bangkok Gems & Jewelry Fair at Queen Sirikit National Convention Center, Room 110AB. February 25, from 2:00 - 4:00 pm.
Register: https://shorturl.at/fdW5T

ขอเ...

Ready for the upcoming Bangkok Gems and Jewelry Fair?

Visit GIA at BGJF to gain convenient access to our on-site gemologists, renowned for their unparalleled colored stone services. 

Date: February ...

Special Laboratory Grading for Larger-Size Diamonds! Available at the Bangkok Laboratory only. 
Submission Dates: February 10 - 28.
Loose, natural D-to-Z, 4.00 – 5.99 carats.

พิเศษ จีไอเอ กรุงเทพให้บ...

Check out the latest issue of Gems & Gemology. Click this link to download: https://www.gia.edu/doc/winter-2024-gems-gemology.pdf

นิตยสาร Gems & Gemology ฉบับล่าสุด สามารถดาวน์โหลดได้ที่ลิงก์นี้ค่ะ h...

Prepare for the upcoming Bangkok Gems and Jewelry Fair with this special limited-time offer: The GIA Bangkok Laboratory is offering five business day turnaround times with the purchase of a GIA colore...

We would like to invite you to celebrate the launch of the newest GIA Alumni chapter in our global community: welcome, Thailand Chapter! 🎉

Join us to celebrate the launch party during the Bangkok Ge...

Attention GIA clients 💎 

For a limited time, we are offering reduced fees on any Diamond Update Services PLUS a complimentary custom inscription! If you’ve been thinking about updating your GIA repo...

Join the seminar during the 70th Bangkok Gems and Jewelry Fair at Queen Sirikit National Convention Center, Room 110C, September 11, 2024, from 2:00 - 4:00 pm.
Register: https://shorturl.at/lKRYU

ขอเ...

Ready for the Bangkok Gems & Jewelry Fair?

Join Us for the 70th Bangkok Gems & Jewelry Fair, 9-13 September 2024, 10:00 a.m. - 6:00 p.m. at Queen Sirikit National Convention Center, Booth No. XX 14, ...

The more colored stones you submit, the more you save with this special promotion available now through October 31.  

- 10% Discount on 25-49 stones
- 15% Discount on 50-99 stones
- 20% Discount on 1...

Check out the latest issue of Gems & Gemology. Click this link to download: https://www.gia.edu/doc/winter-2023-gems-gemology.pdf

นิตยสาร Gems & Gemology ฉบับล่าสุด สามารถดาวน์โหลดได้ที่ลิงก์นี้ค่ะ h...

Join the GIA seminar during the 69th Bangkok Gems and Jewelry Fair at Queen Sirikit National Convention Center, Room 110C, February 24, 2024, from 2 - 4 pm.

Register: https://rb.gy/4ot1i8

For a limited time, save 20% on Jade Reports submitted to any GIA laboratory. This offer is available from February 12 to March 31 and applies to:
- Loose stones or carvings that can be used for jewel...

Check out the latest issue of Gems & Gemology.

สามารถเข้าไปดาวน์โหลดฉบับล่าสุดของนิตยสาร Gems & Gemology ได้ที่นี่ค่ะ

Click here https://www.gia.edu/doc/fall-2023-gems-gemology.pdf

GIA (Gemological Institute of America) is adding a report comment for the historical trade term 'Hanadama' to distinguish a designated quality range of cultured Akoya pearls.

GIA’s analysis of the in...

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