The 24-year-old proved too good for Viktar Zuyev of Belarus in the final of the Olympic tournament.
In front of her home crowd, legendary boxer Mary Kom scripted history by winning a historic sixth gold in the Women's World Championships after defeating Hanna Okhota of Ukraine.
Six-time champion Mary Kom defeated Colombia's Valencia Victoria in her quarter-final bout to secure her maiden World medal in the 51kg category, in which she won an Olympic medal back in 2012.
The legendary M C Mary Kom won historic sixth gold medal in the 48kg final in the Women's World Boxing Championship in New Delhi on Saturday.
MC Mary Kom inched one step closer towards her sixth gold medal at the Women's World Boxing Championships after beating Kim Hyang Mi of North Korea in the semi-finals of the 48kg.
PV Sindhu, Depika Padukone ensured Indian representation on the global front.
Bahrain's Ruth Jebet blew away the competition to win the women's 3,000 metres steeplechase gold on Sunday, but narrowly missed out on the world record. Jebet ran a bold race, bursting into the lead after a few laps and setting a blistering pace to win in 8 minutes, 59.75 seconds, just shy of the 8:58.81 world record set by Russia's Gulnara Galkina at the 2008 Beijing Games.