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It’s almost engagement season—that time of year around Thanksgiving, the holidays, and New Year’s when everyone seems to listen to Beyonce and Put a Ring On It. So, we’re getting in the spirit by taking a look at some of the biggest sparklers ever to grace the left ring fingers of our favorite celebrities. From Jennifer Aniston to Catherine, Duchess of Cambridge, to Blake Lively and beyond, click through the gallery to get all the details on the biggest and the best—because there are few things that rock our world quite like a big, gigantic…rock. Your celebrity engagement ring education begins now. Say yes!