The final day of the event belonged to the versatile South African as she first won her specialist 800m event, leading from start to finish and crossing the line in 1:58.20, adding to the 1 500m title she won on Friday.
Semenya finished well ahead of Morocco's Malika Akkaouiu, who crossed the line second in 2:00.24 with Kenya's Emily Cherotich third in 2:00.70.
"I was quite happy with the time, my rhythm is good, and I just need to go home, rest a bit and prepare for Europe," said Semenya.
She saved the best for last in the 4x400m relay final, where she came from well behind in third place on the final leg to triumph.
