Welcome to the future of diamond grading.

Formed through a groundbreaking partnership between New York's top diamond grading lab, Gem Certification & Assurance Lab (GCAL), and Sarine, a global leader in innovative diamond technology for over 35 years, GCAL by Sarine stands as the ultimate fusion of the best in gemology and technology. This partnership guarantees customers the most comprehensive diamond grading services globally.

Driven by the goal of increasing consumer confidence and empowering retailers, GCAL by Sarine offers the most advanced AI-based diamond grading services and a verifiable diamond traceability solution.

GCAL By Sarine

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GCAL By Sarine

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