An aura of heightened value, interest, or meaning surrounding something, arising from attitudes and beliefs that impute special power or mystery to it: the cowboy mystique; the mystique of existentialism.

An aura of a person that is somewhat mysterious and is difficult to put your finger on...needless to say mystique is a sexy trait and will always attract others to inquire further and go deeper into that mysterious person. A beautiful trait.

A quality that makes someone or something seem mysterious, exciting, or special.