Hallmark Unique Identification Number (HUID)

  • Bureau of India Standards (BIS) has prohibited the sale of hallmarked gold jewelry or gold artifacts without 6 digits alphanumeric Hallmark Unique Identification Number (HUID) after 31 March 2023.
  • Till date old hallmarked jewelry with four marks without HUID was also permitted to be sold by the jewelers along with the 6-digit HUID mark.

About Hallmarking of Jewelry

  • The hallmarking scheme for Jewelry was started by BIS in the year 2000.
  • 6-digit HUID was introduced from 01 July 2021 and all articles hallmarked post 01 July 2021 have to be hallmarked with HUID only.
  1. After the introduction of HUID, the hallmark consisted of 3 marks viz, BIS logo, purity of the article, and six-digit alphanumeric HUID.
  2. Each hallmarked article has a unique HUID number which is traceable.