Sarine Technologies Ltd introduced an innovative solution for diamond colour grading aimed at providing a reliable, cost-effective option for gemmologists and jewellers.

According to Sarine, the Certified Hybrid Diamond Master Sets were developed in collaboration with the Accredited Gemologists Association (AGA), Stuller and GCAL by Sarine as a practical alternative to traditional natural master sets, addressing long-standing industry challenges of limited availability and rising costs.

Stuller, a key diamond supplier, leveraged its extensive global network and specialised screening and sorting operations to source and select qualified stones for these sets.

The sets use lab-grown diamonds for higher colour grades and natural diamonds for lower ones. “By combining natural and lab-grown diamonds, these sets offer a precise and accessible tool for grading,” Sarine stated. 

The initial selection process has been streamlined using Sarine’s AI colour grading technology.

“Master stones must meet strict criteria – VG+ proportions, VS2+ clarity, facetted girdles, minimal fluorescence, and a pure yellow hue without tinges or modifiers – all while representing the highest of each respective colour grade,” explained Angelo Palmieri, president of GCAL by Sarine. “AI has made the process faster and more efficient, ultimately making master sets more accessible for gemmologists and jewellers.”

Following Stuller's initial selection, each set is graded, verified and certified by GCAL by Sarine, combining AI-driven grading with expert human assessment to ensure the master stones meet the highest standards.

The AGA Board of Governors recently unanimously approved the new Hybrid Diamond Master sets for use in their Certified Gemological Laboratory (CGL) programme, which sets standards for equipment and professional training for gemmological laboratories; and authorised GCAL by Sarine as an approved grading laboratory for certifying these master sets. 

These sets will soon be available for purchase by the trade directly from Stuller.