Professional gemological analysis, grading, and certification services. Our expert team provides accurate and reliable reports for diamonds, colored stones, and pearls.
Certificates Issued
Gem Species
Years Experience
Comprehensive gemological analysis using state-of-the-art equipment
Accurate species and variety determination using advanced spectroscopy and refractometry.
Color, clarity, cut, and weight grading following international standards and protocols.
Geographic origin assessment using chemical fingerprinting and inclusion analysis.
Comprehensive testing to detect heat treatment, filling, diffusion, and other enhancements.
Browse our A–Z database of 500+ gemstones with images, properties, and identification data.
Enter a certificate number to verify its authenticity
Certificates can also be verified by scanning the QR code on the report
Submit your gemstone for examination with a completed request form.
Our gemologists perform thorough testing using advanced instruments.
A detailed identification report is prepared and reviewed.
Receive your gemstone and certified report with QR verification.
National Gem Lab is a premier gemological testing facility dedicated to providing accurate, reliable, and internationally recognized gemstone certification services.
Our team of expert gemologists uses cutting-edge analytical equipment including UV-Vis-NIR spectroscopy, EDXRF spectrometry, and advanced microscopy to deliver precise results you can trust.
Every certificate issued carries a unique QR code for instant online verification, ensuring the integrity of your gemstone documentation.
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