Lil Pump Buys His Entire Crew Diamond Watches

Lil Pump is sharing his wealth, in the iciest way possible -- snapping up bust down watches for his whole crew ... 'cause that's what you do when you're dripping in half a mil.

We spotted Pump at Avianne & Co jewelers Wednesday night in NYC, and he and his crew happily flashed us their shiny new timepieces -- even his lawyer got one! If you're wondering what a bust down watch is ... it's essentially a watch covered in diamonds.

So, yeah ... not cheap.