Darabian came first in the Women's Discus Throw-F53 with a throw of 14.25 meters.
Her Iranian compatriot Hanan Kaab Omeir won a silver medal with 11.55 meters and Japanese thrower Keiko Onidani won the bronze with 11.01 meters.
As the Asian Para Games returns to China for the second time following Guangzhou in 2010, nearly 3,100 athletes from 44 countries and regions are taking part across 22 sports and 564 events at the Hangzhou Asian Para Games, which runs through Oct 28.