In the first semi-final, Gkountoura defeated US fencer Elizabeth Tartakovsky 15-5 and secured the second qualification to a World Cup final after the 2022 World Cup in Tbilisi.
Despina Georgiadou then defeated world champion Misaki Emura 15-11 for the second time after the semi-final of the Tunis Grand Prix in January.
The two Greek teammates competed against each other at the final.
Georgiadou won 15-10, earning a second consecutive gold medal after the one she got at the Tunis Grand Prix last month. Before that, she had won the bronze in Orleans in December 2022.
Gkountoura had also recently won bronze at the world cup in Algiers in November.
The two Greek fencers had dueled before in the emblematic final of the Orleans Grand Prix in 2021, won 15-14 by Georgiadou.
Both athletes will compete again on Sunday, together with third teammate Kleri Benou, in the team competition, with the aim of making it to the top 8 teams of the tournament.