'Bachelor' Bride -- Massive Diamond Uncovered

4/22/2010 11:10 AM PDT
Former "Bachelor" winner Shayne Lamas didn't just get new life partner from her quickie Vegas marriage to blogger Nik Richie -- she also got a fat ass, diamond ring!

TMZ has learned the dude behind TheDIrty.com hooked his new bride up with a post-wedding ring when they got back to L.A. -- a ring that boasted a 5 carat diamond right smack in the center.

We're told the ring -- which Nik bought from Simon G Jewelry -- is valued at more than $100k.