Section 13(1)(e) in Bureau of Indian Standards (Hallmarking) Regulations, 2018
(e)assaying and hallmarking centre is found indulging in any unfair practice such as hallmarking precious metal articles for non-certified jewellers, marking of articles with incomplete hallmark or hallmarking articles without carrying out testing or hallmarked precious metal article is found to have shortage of purity of more than forty parts per thousand;