A$AP Rocky Helps Bling Out Lil Uzi Vert With $100k Chain

A$AP Rocky just hooked up the homie Lil Uzi Vert with a chain for the ages ... that even looks like the up-and-coming rapper.

Uzi's chain is made up of 10,000 diamonds and gems -- including pink, sapphire, white, canary and chocolate diamonds -- and features Gucci links like Pharrell's famous necklace. The ice didn't come cheap -- we are told it's worth around $100k!

Custom jeweler Ben Baller of IF & Co. tells TMZ ... he considers this one of the top 3 chains he's ever done. He made it for Uzi after meeting him through his business partner, A$AP. We're told A$AP and Travis Barker vouched for Uzi, and the deal was done.

Ben says Lil Uzi's already ordered a 2nd chain, but this one's gonna be hard to top.