https://www.professionalutilities.com/blogs/bis-hallmarking-for-18k-gold.php
BIS Hallmarking for 18k Gold: Importance, Benefits & Process
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https://www.greenpermits.in/10/difference-between-old-and-new-bis-hallmarking-rules-2025/
Difference Between Old and New BIS Hallmarking Rules (2025 Update) - Green Permits
Apr 18, 2026 - Learn how the 2025 BIS hallmarking rules differ from the old system. Understand new HUID codes, silver hallmarking norms, and compliance steps.
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