Hallmark Jewellery vs. Assay Certified Gold Bars — What's the Difference?

If you've shopped for jewellery in India recently, you've likely seen the BIS hallmark mentioned everywhere — it's now mandatory for most gold and silver jewellery. So why don't gold coins and bars carry the same hallmark? The answer comes down to how Indian regulation treats jewellery and bullion as two separate categories.

BIS hallmarking: built for jewellery

The Bureau of Indian Standards (BIS) hallmarking scheme is India's official system for certifying the purity of gold and silver jewellery. It's mandatory, government-regulated, and operates through a network of BIS-recognised Assaying and Hallmarking Centres (AHCs) across the country. A hallmarked piece carries several standard marks — the BIS logo, a purity/fineness number, the testing centre's mark, and a unique HUID (Hallmark Unique Identification) code that can be verified through the official BIS Care app.

Why gold bars and coins are treated differently

India's hallmarking regulations specifically exempt gold bullion — bars, coins, plates, rods, and similar bullion forms — from the mandatory hallmarking scheme that applies to jewellery. This isn't a loophole or something sellers are working around; it reflects that bullion products and jewellery are regulated as distinct categories, with different certification practices built around each one's purpose.

For bullion products like the gold coins and silver bars we sell, the relevant certification is an Assay Certificate issued directly by the manufacturer or refiner that produced the item — confirming its purity, weight, and (usually) a unique serial number. This is a long-standing industry practice for bullion globally, not unique to India.

Side-by-side comparison

Does this mean bullion is less trustworthy than hallmarked jewellery?

Not inherently — it reflects different regulatory treatment for different product types, not a lower trust standard. Established refiners that produce investment-grade bars and coins generally have strong reputational and commercial incentive to certify accurately, since their brand's credibility in the bullion market depends on it. That said, the verification mechanism is different: hallmarking gives you a centralised government database (HUID) to check against, while bullion certification verification depends on the specific refiner's own systems. This is exactly why choosing established, recognised refiners matters when buying bullion.