How do you find the hallmark on a gold chain?

The hallmark on your gold jewellery must have a Bureau of Indian Standard (BIS) mark which is represented by a triangle. To ensure purity in karat and fineness, look for the Caratage (22K915). One must always look for jewellers mark and Assaying and Hallmarking Centres identification mark or number.

How do you identify gold ornaments?

Simply take your jewellery and drag it along the surface of the plate. As you drag the piece of your jewellery, if you notice a black streak on the place, it indicates that what you own is not real gold. But if there are no marks on the plate, then your ornament is made of pure gold.