NFL Draft: Top Prospect Drops $41k ... On Pre-Draft Jewelry Run

He's about to become a millionaire overnight -- so top NFL prospect Artie Burns decided to celebrate early ... by dropping $41k on some sick jewelry, TMZ Sports has learned.

The former University of Miami star is projected to go in the 1st or 2nd round ... and earlier this week, he swung over to Joe Avianne's at Avianne and Co. in NYC to ice up.

"Artie came through and picked up a 2-tone Rolex ($19k), a diamond cross ($3k) and a diamond tennis chain ($19k)," Avianne tells us.

So what's Artie's next purchase? Hopefully a safe.