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About Us

GRC Gem Testing Lab in Madurai provides expert testing and certification for diamonds and other gemstones, ensuring authenticity, quality, and trust.

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Diamond Jewellery Report

Our Diamond Jewellery Report provides a detailed analysis of your diamond jewellery, including clarity, cut, carat, and color. Each report is issued by certified gemologists, ensuring accurate evaluation and authentication for buyers, sellers, and collectors.

Grading Report

The Grading Report offers a comprehensive assessment of gemstones based on internationally recognized standards. This includes evaluation of cut, color, clarity, and carat weight, helping you understand the true quality and value of your precious stones.

Color Stone Identification Report

Our Color Stone Identification Report accurately identifies and verifies colored gemstones such as rubies, sapphires, and emeralds. It provides detailed information about origin, treatments, and authenticity to give you complete confidence in your gemstones.

Color Stone Jewellery Report

The Color Stone Jewellery Report combines gemstone identification and jewellery assessment. It evaluates both the colored stones and the overall craftsmanship, providing a professional report for insurance, resale, or personal assurance.

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We provides best services

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At GRC, we are committed to transparency, accuracy, and professional service. Whether you are a jeweler, collector, or gemstone enthusiast, we provide dependable certification that adds credibility and trust to your precious investments.

  • Certified and experienced gemologists
  • Advanced testing equipment for precise results
  • Comprehensive reports on gemstone authenticity and quality
  • Trusted by jewelers and gemstone traders across Madurai
01. Happy Customer

532

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02. Year Experience

25

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Discover GRC FAQs

FAQ

What is the purpose of a gemstone certification report?

At the heart of the diamond industry lies diamond A gemstone certification report verifies the authenticity, quality, and characteristics of your gemstone, including details like color, clarity, cut, and carat. It ensures transparency and builds trust for buyers, sellers, and collectors.

How long does gemstone testing take at GRC Gem Testing Lab?

Testing times vary depending on the type of gemstone and service requested. Most standard reports, such as diamond or colored stone identification, are completed within 1–3 business days.

Can GRC identify treated or synthetic gemstones?

Yes, our certified gemologists use advanced equipment to accurately identify treated, synthetic, or natural gemstones, providing detailed information about any enhancements or treatments applied.