Mark Zuckerberg surprised about 100 of his closest friends with a surprise wedding to his longtime girlfriend, 27 year old Priscilla Chan.  The guests were at Mark’s Palo Alto home expecting to be there to celebrate Chan’s graduation from medical school.

Surprisingly, there were no diamonds on Chan’s wedding ring, but rather a ring that Mark designed with a “very simple ruby”.  Also surprisingly Mark did not wear his standard hoodie, choosing rather a very nice dark blue suit.

This comes at the end of a very big week with Mark ringing the opening bell on Wall Street just the day before for Facebook’s IPO.

My congratulations to the happy couple!

Update 5/27/12 – US Magazine has pictures of the ring!