BIS hallmark on gold jewellery and artefacts consists of three components:
👉🏻BIS logo
👉🏻Purity of Gold
👉🏻6 digit alphanumeric HUID (Hallmark Unique Identification).

K Chandan Rao, Scientist-B, BIS gives an overview on the hallmark.



The Bureau of Indian Standards is the National Standards Body of India under the Department of Consumer Affairs, Ministry of Consumer Affairs, Food & Public Distribution, Government of India. BIS is responsible for the harmonious development of the activities of standardization, marking, and quality certification of goods and for matters connected therewith or incidental thereto.

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