Updated On: 05 March, 2023 09:48 AM IST | New Delhi | Agencies
Hallmark Unique Identification (HUID) number is a six-digit alphanumeric code consisting of numbers and letters.

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Gold jewellery and artifacts having only a four-digit number Hallmark Unique Identification (HUID) number as a hallmark cannot be sold from March 31, the Ministry of Consumer Affairs has announced.
From April 1, only those gold jewellery and artifacts with a six-digit alphanumeric number as a hallmark can be sold, Nidhi Khare, additional secretary, of consumer affairs said. Hallmark Unique Identification (HUID) number is a six-digit alphanumeric code consisting of numbers and letters.