Is hallmarking mandatory for silver jewellery, coins?

The government has made hallmarking mandatory for gold jewelley. Further, jewellers can only sell hallmarked gold jewellery irrespective of its purtiy from June 1, 2022 in the notified districts. However, is hallmarking mandatory for silver jewellery and coins as well? Read on to know hallmarking rules for silver and what are other things to keep in mind.