Former NFL star Le'Veon Bell just turned his entire life story into drip -- honoring his journey from college football to the pros and beyond with a custom chain ... loaded with emerald, ruby, and diamond-encrusted logos for every chapter of his career!
TMZ Sports has learned ... the three-time Pro Bowl running back linked up with his longtime jeweler, Moe Diamonds, in Miami to cop a new piece.

We're told Bell, 33, decided on only two team logos for the chain -- Michigan State University, where he played from 2010 to 2012, and the Pittsburgh Steelers.