“During the 11 years spent under our colors, Christophe has, thanks to his incredible talent and class, greatly contributed to writing the legend of the club.
It added: “A rugby genius and an unparalleled companion, he leaves a great void in our great family. Our thoughts go out to his family, his partner Loretta, his daughters Chiara and Mia.”
The game is regarded as one of the best in the history of the tournament, but France lost to Australia in the final.
The Nanterre Prosecutor Office told CNN an inquiry into the cause of Dominici’s death is underway.
France Rugby posted a tribute to the former player on Twitter saying the community was “mourning after the tragic death of our winger Christophe Dominici, we are thinking especially of his family and loved ones.”
Dominici started his career with RC La Valette in 1991 before joining Toulon two years later. He eventually moved to Stade Francais in 1997 where he won five national titles.
He played in three World Cups for his country and won four Six Nations titles, including two grand slams in 1998 and 2004.