But it was his truly bonkers new accessory—a huge, iced-out chain featuring the unmistakable ... But I just thought to myself, I wish we could do a diamond set, because we could do so much ...

With that, here's what you need to know about Jefferson's vaunted jewelry collection, namely his iced-out chain. SN's PLAYOFFS ... Jefferson also dons a diamond-encrusted grill before games ...

The party included a performance from rapper Rick Ross and culminated with Mayweather receiving an iced-out chain from Benny the Jeweler, who is notorious for producing jewelry for celebrities.