I broke up with fiance I asked for jewelry back what are my legal rights

As a general rule, gifts once given belong to the recipient.  Some states (not sure about Texas) make an exception for gifst given in contemplation of marriage, which generally means the engagement ring.  In many, if not most, of these states, this rule applies only when the recipient is the one who broke the engagement, although this situation may be an exception, if you can show that the gift was not given unconditionally but was given in contemplation of marriage.