When it comes to engagement rings, eschewing tradition in favor of rare or unexpected styles is an increasingly popular trend (and a surefire way to stand out). Of course, the classics are timeless, but for certain brides-to-be, ornate settings, colorful stones or avant-garde gem cuts are needed to suit their equally unique personalities. Thus, we culled 43 unexpected rings guaranteed to wow, from delicate and demure to fanciful and flashy. Get inspired.