Star Jones -- My Gross Apartment ... Is a GOLD MINE!!

Jones bought the 3-bedroom, three-story, 1,936-square-foot pad back in 2001 for $980,000 ... back when she was still cashing checks from "The View."

But after 11 years, one divorce, a lap-band surgery and a feud with Barbara Walters ... Jones managed to sell the swanky digs for a colossal $1.55 million ... which for all you math nerds, is a cool $570k in profit.

Now, here's the rub -- Jones HATED the place ... and even sued the building for $700,000 back in 2008 ... claiming the place had water problems that led to mold that led to a disgruntled TV star.

Jones eventually settled the lawsuit with the building ... and we're guessing the water problem was eventually taken care of.