Now that's a big rock!

"Warm Bodies" star Teresa Palmer has been engaged for almost a month -- but she just now got her ring.

After fiance Mark Webber popped the question, the sparkler had to be sent back to the jeweler to be resized. But Teresa got it back this week and couldn't wait to show it off to all her Instagram followers.

"Just got my beautiful ring. Ethical diamonds in rose gold band, with a rose quartz crystal- Stone of the heart. Exactly me. #love," she posted about the gorgeous bling.

The couple met over Twitter back in September and are also expecting their first child together. Webber also has a son from a previous relationship.

See how her rock stacks up to more celebrity engagement rings in the gallery above! 

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