IDT is one of the premier networks of gemological laboratories, trusted globally for the independent certification of natural diamonds, lab-growns, coloured gemstones, and studded jewellery. Our purpose is simple yet powerful: to deliver accuracy, transparency, and confidence to every stakeholder in the jewellery industry.

With an unwavering commitment to international standards, IDT strengthens the traditional 4Cs—Cut, Colour, Clarity, and Carat—with an essential 5th C: Confidence. Each IDT report reflects the highest level of scientific integrity and ensures complete assurance for both jeweller and consumer. To date, IDT has certified over 10 million pieces, underscoring our leadership and credibility across multiple global markets.

IDT’s network spans leading jewellery brands, major retail chains, and established jewellers across South Asia, the Middle East, Central Asia, and South-East Asia. To meet the needs of high-volume and high-value trade, IDT pioneered the Mobile Laboratory concept—deploying trained gemologists and advanced precision instruments directly to retail stores and manufacturing hubs. This innovation enables on-site grading, reduces risk, and delivers unmatched convenience without compromising scientific rigour.

Our certification framework is built on clarity and precision. IDT reports clearly distinguish natural vs. lab-growns, identify treatments, and document each stone’s full gemological profile—shape, cut, measurements, colour, transparency, optical characteristics—accompanied by high-resolution imaging. In a world where synthetics and treated stones are increasingly accessible, IDT reports serve as a global language of trust, ensuring every transaction is informed, transparent, and secure.

As jewellery continues to evolve into one of the world’s most aspirational lifestyle categories, authenticity has become more important than ever. IDT is uniquely positioned to support this growing demand through a 360° ecosystem that encompasses certification, education, equipment, and consultancy—enabling retailers, wholesalers, manufacturers, and end customers to make confident, well-informed decisions.

Strengthened by strategic partnerships and a commitment to continuous innovation, IDT is shaping the future of gemological excellence—driving trust across the jewellery industry and bringing scientific certainty to every gem and every piece of jewellery.