Soulmate Rings

Juvia Lockser has a ring she recieved from her late mom, it was a dark blue. When she researched into it she found out it the rings were given by the three fates Mirajane, Erza, and Evergreen. They would react when they found their soulmate. Every time the soulmates would get together, one of them breaks, and the remaining one gets passed down from generation to generation, changing into different colors. The broken one would reform onto the other significant other's hand.