Reliable Gemstone Testing, Anytime

Service, Quality Checked and Certified Reports You Can Trust

Round-the-Clock Gem Testing

Certified Reports, Quality Assured and Always Available

Tested, Trusted and Certified

Gem and Diamond Testing with Guaranteed Quality Reports

Trusted Experts in Gem and Diamond Testing

Behind the Certification

Astro Gemological Lab is a trusted and professional gem testing service located in Karaikudi. Founded in 2025 by Mr. V. Alagusundaram, our lab is committed to providing accurate, scientific, and reliable gemstone and diamond certification services.

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Experience, Expertise and Authenticity in Gemmology

In modern world gem identification certificate is essential for all customers. We are in gem & jewellery field about three decades.

We have well equipped lab to give authenticity certificate.

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AGL Testing Report

At Astro Gemological Lab (AGL), we provide a range of gemstone and diamond testing reports, from quick identification to in-depth certification, ensuring accuracy, authenticity, and trust for every client.

Basic Identification Report

Comprehensive analysis with complete details, treatment detection, and high-resolution images.

Detailed Gemstone Report

Comprehensive analysis with complete details, treatment detection, and high-resolution images.

Diamond Grading Report

Professional 4Cs grading with natural/synthetic verification and treatment detection.

Verification / Re-Check Report

Re-verification of previously certified stones to confirm or update results.

Our Reputation Speaks Through Them

5000+
Happy Clients

Astro Gemological Lab (AGL) provides scientifically tested and certified reports for gemstones and diamonds, ensuring authenticity, quality, and value. Each report is prepared by experienced gemologists using Gemological Institute of India (GII) authorized equipment.

  • Stone type and identification

  • Shape, cut, and measurements

  • Weight (carats)

  • Color and clarity grading

  • Unique report number for verification

Ensure Your Diamond’s Authenticity - Book Your Testing Now!

For Enquiry

+91 9566422988

We offer scientific testing, analysis, and certification of natural gemstones and diamonds. Our reports confirm the authenticity, quality, and origin of each stone.

Yes. We use advanced equipment authorized by the Gemological Institute of India (GII) to ensure accurate and reliable results.

Absolutely. We specialize in the testing and certification of both natural gemstones and diamonds.

Yes. Every tested stone comes with a certified report that can be trusted by customers, traders, and jewelers.
(GII) authorized equipment
"Highly professional service!"

"I had my diamond tested here, and the process was quick and very accurate. The certified report gave me complete confidence in my purchase."

"Trustworthy and reliable"

Astro Gemological Lab is the best place for gemstone testing in Karaikudi. Their GII-authorized equipment ensures genuine results.

"Authenticity guaranteed"

I’ve been in the jewelry business for years, and this lab is my go-to for accurate testing. Reports are always clear and detailed.


Verify Report