Gabriel attended United Faith Christian Academy, in Charlotte, North Carolina, where he also played high school basketball.

In his senior season, Gabriel averaged 12.2 points, 7.3 rebounds and 2.3 blocks per game and was named the team's MVP.

[7] On June 28, 2014, Gabriel signed a one-year deal to play in Turkey, with the Turkish League club Pınar Karşıyaka.

[12][13] On June 28, 2017, after having won both domestic titles with Panathinaikos, Gabriel renewed his contract with the Greek champions for three (1+1+1) years.

[15] On October 28, 2019, the College Park Skyhawks, the G League team owned by the Atlanta Hawks, invited Gabriel to their training camp as an affiliate player.