Hallmarking is the accurate determination and official recording of the proportionate content of precious metal in precious metal articles. Hallmark is the official mark used as a guarantee of purity or fineness of precious metal articles.
The principle objectives of the Hallmarking Scheme are to protect the public against adulteration and to obligate manufacturers to maintain legal standards of fineness.
In India, at present two precious metals namely gold and silver have been brought under the purview of Hallmarking.
As per the Hallmarking Scheme, licence is granted to the jewellers by Bureau of Indian Standards (Govt. of India). The BIS certified jewellers can get their jewellery hallmarked from any of the BIS recognized Assaying and Hallmarking Centres.
The recognition of an Assaying and Hallmarking Centre is done with Indian Standard IS 15820:2009.