TDF Diamonds & Gold

Jewellery should only change hands when accompanied by a certificate attesting to the quality. Regardless of the location or marketplace, an authentic Laboratory Report is the common language of trust and confidence in the gemological world and should be considered an essential part of any transaction. We take this responsibility very seriously, and all our jewellery is genuine and certified by third-party institutes like IGI, GIA, BIS and PGI.



(International Gemological Institute)

Around the world, IGI certificates bring confidence when buying or selling diamonds, gemstones, and jewellery. Total commitment to understanding consumer concerns has motivated IGI to develop comprehensive analysis and clear documentation for consumers. This empowers jewellery buyers to focus on finding precisely what they are looking for, with full assurance in the integrity and quality of the IGI certification. Being the world’s largest independent gem certification and appraisal institute for diamonds, coloured gemstones, and jewellery, IGI is a standard of excellence for industry professionals and consumers around the globe.

The Gemological Institute of America (GIA) was established in 1931 and has been one of the leading authorities for diamonds, gemstones as well as pearls. Since its inception, it has stood to protect the interests of buyers and sellers across the world by ensuring standards to authenticate a gemstone’s quality. The inventors of the 4C’s – cut, clarity, colour and carat weight, established the parameters that help choose quality diamonds, and today, these parameters are the standard in case of the gem trade. It has also, since time immemorial, remained a leading source of gem and jewellery information for trading purposes as well as for the public and other worldwide media outlets. The 4C’s – Cut, clarity, colour and Carat weight represent the key characteristics that help determine the quality and the value of a diamond. At the GIA laboratories, a comprehensive report helps analyse the quality of the diamond. With an increase in the number of consumers looking for authentication on the diamond purchased, GIA has ensured that the certification it offers provides accurate details to the consumer.

The GIA also offers diploma and certificate programs with comprehensive studies in the respective fields of gemology, diamonds, coloured stones, jewellery, Jewellery Design & Technology, Jewellery design and CAD/CAM for jewellery, making them pioneers in the field of gemstones and diamonds.



(Gemological Institute Of America)


(Bureau Of Indian Standard)

The BIS hallmark is a system that provides certification for gold and silver jewellery, indicating the purity of the metal. This certification authenticates that a piece of gold jewellery purchased conforms to the grades laid by the Bureau of Indian Standards which is the national standards organization in India.

This hallmarking of gold jewellery was established in April 2000. The hallmark itself consists of a BIS logo, a 3 digit number that indicates the gold purity, the logo of the assaying centre, the logo or the code of the jeweller and the code that indicates the hallmarking date.

The BIS hallmarking has a high reputation among the jewellery trading industry in India and is widely accepted by consumers.

TDF’s expertise in design development, manufacturing and quality control has helped it provide the clients with customized solutions tailored to their specific requirements.

Platinum Guild International (PGI) is an organization founded by leading South African platinum producers and refiners. Since 1975, PGI has been providing information, sales support, and training to all levels of the jewellery trade for almost 40 years. In addition to its headquarters in London, PGI has offices in each of the world’s major jewellery markets – China, India, Japan, and the USA.

PGI aims to provide easily accessible resources, practical help, and education. Our objective is to provide an interactive forum for jewellery professionals to network, seek advice, and share information.



(Platinum Guild International)


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