According to the search results, Jon Jones is currently a purple belt in Brazilian Jiu-Jitsu. His coach, Roberto Tussa, has stated that he wont promote Jones to brown belt until he trains at least twice a week in the gi. Tussa has strict criteria for promoting his students, based on the federation, on the CBJJ. Jones has been training BJJ since early 2013 at Gracie Barra New Mexico under professor Roberto Tussa Alencar, and was promoted to purple belt back in December 2019.