In case you're counting carats, yes, that is bigger than the massive 13-carat ring he gave her when he proposed or the 20-carat emerald ring he gave her on her wedding day.
Avril Lavigne posted the pic on Twitter with the caption, "I still can't believe my 1 year anniversary gift. 17 carat emerald cut. Wow. I love my hubby." For some reason, however, she's since deleted the tweet.
As for the value of Avril's newest rock, E! News spoke with a source who said, "Avril's ring could be anywhere from several hundred thousand to in the millions [of dollars], depending on color and clarity."
Whoa, happy anniversary, girl! Now the question is, what did Chad get?!