Keira Knightly Shows Off Her Huge Diamond Ring!

Keria Knightly recently announced her engagement to rocker James Righton. While the couple was on a romantic stroll in London recently, Keira was spotted flaunting her sparkly new diamond ring.

According to E! Online, the ring is composed of a circular diamond with a gold band. It seems pretty simple, but we can only imagine how large the rock is. We’re pretty sure that James Righton wouldn’t get her anything smaller than a medium-sized boulder . . . he is a rocker after all. So we imagine he spent a legitimate amount of cash-dollar-monies on the ring.

What do you all think of this soon-to-be wedded couple? While the couple isn’t afraid to take their PDA to the city streets, they have yet to hit the red carpet or make a media-heavy public experience. Wonder when they’ll make that next step?