Yes, obviously. At National Facets, all jewelry has government-approved hallmarking that makes it evident that it is genuine and pure.
It is recommended that you check the hallmark when purchasing gold jewelry to be sure you are getting what you paid for and that the purity is as claimed by the jeweler. In essence, hallmarking centers (AHCs) authorized by the Bureau of Indian Standards (BIS) provide purity certifications. This will be simpler for you now that the government intends to make gold jewelry hallmarking mandatory starting in the following year.