Celtic Bracelet Celtic bracelets and Celtic jewellery

Is Anyone Good At Identifying Celtic Jewelry?

I bought a ring a while ago and when i bought it they told me the kind of ring it was and the whole story behind it and i can not for the life of me remember what they said the name of it was...... it is tecnically 3 rings in one. when you look at it closed it is two hands clasped but when you open it up there is a heart on the center ring.
the story behind it is that it is given as an engagement ring the woman keeps the ring with the heart on it, the man keeps on of the rings with a hand on it and whoever the best man is keeps the other ring with the other hand on it. on the wedding day all three rings are put back together and places on the brides finger as the wedding band.....
someone help me figure this out please
thanks in advance for your help!
p.s. it isn't a claddagh ring cause i know what that is!