10:25 AM PT -- We've now obtained photos of the busted back window of the Bentley where the crooks made their entrance into the vehicle.
The alleged getaway car of the thieves is a black sedan ... and cops are asking for any help to try and figure out who was behind the wheel.
Boosie Badazz hates Mondays, like most of us -- actually, probably more -- because someone broke into his ride, and made off with some pricey rings and a $50,000 necklace!
While the rapper was grabbing a bite to eat at a Pappadeaux Seafood Kitchen outside Atlanta, the perps smashed the rear passenger side window of his Bentley SUV ... according to police.
A man named Brian Wilcott reported the break-in, saying he saw a younger-looking black male by the car reaching into it. Wilcott -- better known as rapper B-Will -- works with Boosie and told cops he gave chase, but a suspect jumped into a waiting car and fled.
According to the police report ... B-Will says 3 pieces of his jewelry were stolen -- a "super bowl style" diamond ring valued at $10k, a large rose gold one with the diamond letters "BOSSMAN" valued at $10k, and a rose gold Cuban link chain with diamonds valued at $50k.
Although B-Will told cops the jewelry is his, it's interesting ... because we know Boosie has a "BOSSMAN" ring, and the rapper ranted on social media about it getting jacked, and even threatened the suspects.
Cops say they reviewed surveillance footage from the restaurant, which shows 2 black males dressed in black messing with Boosie's Bentley ... which set off the alarm. The report says the 2 men drove away, but quickly returned to the vehicle, then sped off for good ... at which point B-Will is seen running after them.