My fiancee and I recently broke up because he became extremely psychologically abusive to me and told me to leave during a drunken rant. He is now demanding the engagement ring back. I have my family diamonds in the ring and also contributed money towards the cost of the ring. I offered to give him the ring back if I can take out my diamonds and he pays me what I have into the ring. This seems fair to me. He disagrees and is now threatening to sue me for the ring. What are my rights? I really don't want to deal with this in court.