Setting a new standard in diamond grading!

Explore Certified Hybrid Master Sets Today!
ContactLogin
Join AGA

Redefining Modern Diamond Grading

Revolutionizing Diamond Color Grading: Introducing Certified Hybrid Diamond Master Sets

A close-up of round brilliant-cut diamonds arranged in a cluster, highlighting their exceptional clarity and brilliance.
An Industry-First Collaboration Between:

The Next Step in Diamond Grading

The future of Diamond Grading is here

For decades, gemologists, diamond graders, and retailers have faced rising costs and a limited supply of natural diamond master stones. Conventional alternatives—such as simulant sets or unregulated tools—often fall short of delivering the precision professionals require.

AGA, Stuller, and GCAL by Sarine have partnered to introduce Certified Hybrid Diamond Master Sets—a groundbreaking solution that blends natural and lab-grown diamonds to deliver precision at an unprecedented value.

Call to action
A gemologist carefully inspects a diamond with a loupe, holding it with tweezers as part of the Hybrid Diamond Master Set evaluation process for precise grading.

Why Certified Hybrid Diamond Master Sets Will Lead the Way

Setting New Standards in Diamond Grading

Call to action

Cost-Effective excellence

By blending natural and lab-grown diamonds, these sets reduce the high costs of sourcing natural stones—delivering precision at a fraction of the price.

Precision you can trust

Each set is rigorously graded by GCAL by Sarine, blending human expertise with AI technology to ensure consistent, reliable, and precise color grading.

Designed for Industry Experts

Tailored for gemologists, appraisers, and diamond graders, these sets provide a seamless combination of innovation, practicality, and confidence in every grading session.

A gemologist in a lab coat analyzes diamond data on a specialized grading machine, ensuring precision in diamond grading and color assessment.
A gemologist uses tweezers to examine a diamond under specialized lighting, ensuring precise color grading and quality assessment.
A person carefully secures a diamond in a specialized holder before placing it into a gemological analysis instrument. The background is illuminated with green light, highlighting the precision equipment used for diamond grading and evaluation.
A gemologist examines a diamond under a high-powered microscope, using precision tools to inspect its characteristics. The focused lighting and dark background emphasize the meticulous process of diamond grading and evaluation.
A robotic arm gracefully operates in a well-lit setting, showcasing its precision under the banner of "AI Color Grading.
A person in a lab coat uses a probe connected to a diamond screening device, testing gemstones on a tray. The device screen displays a "Pass" result, indicating verification. Various gemological instruments and diamonds are arranged on a dark table.

precision in every step

From start to Finish

Every Certified Hybrid Diamond Master Set undergoes a meticulous journey to deliver exceptional grading accuracy.

  1. A close-up image of a diamond grading process, where a professional uses precision tweezers to examine a row of loose, round-cut diamonds placed on a white grading tray.

    Meticulous Sourcing

    Stuller carefully selects only the finest diamonds for hybrid sets

  2. GCAL diamond grading certificates for natural and lab-grown diamonds, showcasing detailed reports on quality, clarity, and performance.

    Cutting Edge Certification

    GCAL blends human expertise with AI technology for unmatched grading precision

  3. A Certified Hybrid Diamond Master Set displaying lab-grown and natural diamonds in a grading tray, labeled with corresponding color grades for precise comparison

    trusted Worldwide

    Designed in collaboration with AGA-CGL to meet the needs of professionals worldwide

Call to actionCall to action

Bringing the future of color grading to you

Certified Hybrid Diamond Master Sets will soon redefine diamond grading. Backed by the expertise of AGA, Stuller, and GCAL by Sarine, this innovative tool is set to establish new standards for precision and affordability.

Be among the first to explore a groundbreaking innovation in diamond grading.

Have Questions?Official 2025 Press Release
A collection of round brilliant-cut diamonds scattered on a white surface, showcasing their sparkle and precision cutting.