BIS Logo
The Bureau of Indian Standards mark identifies the official hallmarking scheme.
Marks Of Assurance
The Indian Hallmark
According to the Bureau of Indian Standards, the current hallmark consists of the BIS logo, the purity expressed in karat and fineness, and a six-digit alphanumeric HUID.
The HUID is unique to each hallmarked item and can be checked through the Verify HUID feature in the BIS Care app.

Read Before You Wear
A hallmark is an official record of precious-metal fineness. It should be considered alongside the invoice, product description and any stone-related documentation supplied with the piece.
Explore The Details
The Bureau of Indian Standards mark identifies the official hallmarking scheme.
The karat and fineness appear together, for example 22K916 or 18K750.
A unique alphanumeric identifier that can be verified through the BIS Care app.
A hallmark communicates metal purity; stone quality and product details require their own documentation.
A Considered Approach
Ask the retailer to help you locate and read the marks.
Use the official BIS Care app and its Verify HUID feature.
Retain the purchase record and all accompanying product documents.
Reference: Official BIS Hallmarking FAQ
Carat Street