
Understanding HUID: The Hallmark Unique Identification Number
Everything jewellers and consumers need to know about the HUID system — from how it works to how to verify it.
1 February 2025
In-depth articles on hallmarking, precious metal testing, BIS regulations, bullion markets, and consumer education — written by our team and curated from trusted industry sources.

Everything jewellers and consumers need to know about the HUID system — from how it works to how to verify it.
1 February 2025

How hallmarking centres test the purity of gold and silver bullion — from XRF screening to fire assay.
25 January 2025

An inside look at X-Ray Fluorescence spectrometry — the non-destructive method used to test gold and silver purity.
20 January 2025

A comprehensive guide to the BIS hallmarking system in India — what it means, who it protects, and how it works.
15 January 2025

A clear guide to understanding karat and fineness numbers — from 24K/999 pure gold to 14K/585.
10 January 2025

A chronological overview of how BIS hallmarking became mandatory for gold jewellery in India.
20 December 2024
Our glossary covers hallmarking, assaying, bullion, and purity terminology used across the Indian precious metals industry.
Explore the glossary