You know what they say-- diamonds are a girls best friend... or was it cheeseburgers?

If you love both, you're in luck.

McDonald's is giving away a rare accessory-- the "Bling Mac," a 18 carat gold, diamond ring that looks like a Big Mac.

But you won't find this ring at any drive-thru. In order to get your hands on it, you've got to prove your passion for those two all-beef patties.

Tweet about your love for the Big Mac to McDonald's with the hashtag #BlingMacContest to enter. Here's a taste of the competition: