Govind Sahani (48kg) clinched the gold medal at the Thailand Open after a comprehensive victory over local pugilist Natthaphon Thuamcharoen, in Phuket, on Saturday.
The Indian boxer dominated all three rounds, landing a flurry of punches, to win 5-0.
However, Amit Panghal (52kg) and Monika (48kg) could not go the distance and ended their campaigns with a silver each.
Panghal, the 2019 World Championships silver medallist, lost a closely-fought bout to Rogen Ladon of Phillipines via a 2-3 split decision.
With little separating the two boxers through the course of the bout, the 26-year-old Indian edged past the Filipino in the first round, but Laden made a comeback to take the following two rounds.
Manisha, on the other hand, put up a spirited performance but went down to local boxer Chutamas Raksa 0-5.
India's tally now stands at six medals, including one gold, two silver and three bronze.
Manisha (57kg), Pooja (69kg) and Bhagyabati Kachari (75kg) had signed off with bronze medals on Friday.
At the last edition, India won eight medals, including one gold, four silver and three bronze.
Later in the day, Ashish Kumar, Ananta Pralhad Chopde, Varinder Singh, Sumit will fight for gold in their respective events.