Nine carat Gold (375 ppt) is now officially under mandatory hallmarking as per BIS Amendment No. 2 .All jewellers and hallmarking centres must comply. Jewellers and hallmarking centres are required to comply with this addition of 9 karat gold(375 ppt)  to the mandatory hallmarking list under the BIS regulations. The changes are effective from July 2025. Earlier, categories of 14KT, 18KT, 20KT, 22KT, 23KT, and 24KT gold were in mandatory hallmarking.

More consumers are also turning to 9K-carat gold as higher grades have become very expensive. It is also easier to design jewellery items. By making it mandatory to hallmark 9-karat gold, the BIS hopes to protect consumer interest while also making gold items easier to trace .

over 40 crore gold jewellery items have been hallmarked with a unique HUID, ensuring greater trust and transparency for the consumers in the market.The Bureau of Indian Standards began the fourth phase of mandatory hallmarking under the Hallmarking of Gold Jewellery and Gold Artefacts Amendment Order, 2024, from November 5, 2024.

Additionally, during the fourth phase, 18 additional districts where hallmarking centres have been set up under Mandatory Hallmarking. Following the implementation of the fourth stage, the total number of districts covered under Mandatory Hallmarking now stands at 361.

BIS earlier implemented the first phase of mandatory hallmarking, which was launched on June 23, 2021. This phase covered 256 districts, whereas the second phase commenced from April 4, 2022, where 32 districts were further added.This was followed by the third phase, which was implemented from 6th September, 2023, and covered 55 newly added districts.