We are carrying the diamond and diamond jewellery classification to the future.

Aimed to be the most transparent and scientifically proven diamond and jewellery grading laboratory in the world.

JTR Diamond and Jewellery Grading laboratories

JTR safeguards the gem and jewellery industry’s future with transparent grading practices.

Located at the crossroads of Europe and Asia, JTR’s (Jewellery Technology Research) gemmological institute stands on the shoulders of numerous qualified women and men who have graded millions of diamonds on its premises during the past decade and a half.

With its establishment, JTR is taking diamond and diamond jewellery grading into the future. Its laboratory is equipped with the latest gemmological instruments, tools, and technology. JTR’s graders follow the diamond industry and trade’s internationally accepted grading standards and practices.

Embracing innovation while staying rooted in the practices of traditional diamond grading

Deeply rooted in the practices of traditional diamond grading and aided by unrivaled know-how and its innovative technologies, JTR provides its clientele with unambiguous grading data and complete confidence in the integrity of the grading process.

+Standards

Unrivaled know-how and innovative technologies

Through its extensive R&D efforts, innovative trademarked technology, extensive data accumulation, and the application of AI (artificial intelligence), JTR is at the forefront of semi-automatic and automatic grading procedures. By taking this route, JTR safeguards the gem and jewellery industry’s future with transparent, responsible, and accountable grading practices.

+Discover Reports