Whether it’s food, fashion, or toys, we just love looking back at how things used to be. Not only does it give us a rush of memories and nostalgia, but it’s also interesting to see just how much things have changed. Because of this, we just love it when Mode takes a subject and features 100 years worth of it; and today, they bring us a particularly exciting look back at engagement rings! Take a look at each decade’s most prominent style, and let us know, which one is your favorite?