Popular Nigerian singer, Burna Boy, has honored his late friend, Gambo, in a special way, by spending millions on a customized diamond-encrusted Cuban necklace and pendant engraved with his name. https://www.instagram.com/reel/CtG-gAEokwg/?igshid=MzRlODBiNWFlZA== Burna Boy, has been known to sing about Gambo, in some…