The move came as a surprise to many following speculations that the two were not in good terms after Vanny Boy left WCB Wasafi in July.
The singer parted ways with the Diamond owned record label after six years.
“It’s been six years since we started working together. My team, my family WCB Wasafi, love and unity has been very instrumental in the success of our team.
"I have learned a lot and also we have achieved a lot together. I was the first Tanzanian artiste to win a BET award. I have been the first artiste to perform on big platforms like the MTV EMAs stage, Dubai Expo and many more," Rayvanny said in part.
In his exit message Vanny Boy thanked Diamond for supporting his dream and propelling him to international success.
Davido - Chris Brown is one of my favourite artists to work with