The 23-year-old Jamwal registered a comprehensive unanimous decision victory over Assam's Shiva, underlining his emergence from the shadow of his senior compatriot.
Young Indian boxer Krisha Verma won the gold in the women's 75kg category while five other signed off with silver medals at the inaugural U-19 World Championships organised by World Boxing in Colorado, USA.
Parthavi, Vanshika,Hemant win gold, Indian boxers return with 17 medals from U-19 World Championships