Iolite is said to be a very strong dominance stone. The wearer will feel confident that he is a good leader and should be listened to. Others will accept this because of the aura of self-confidence one projects. Iolites can be especially helpful to those who have an excessively submissive personality. It can help people feel more confident about their ability to take charge of their lives.
Specifically, a grayish Iolite promotes leadership in careers; bluish stones in friendships; and purple Iolites promote leadership in sexual and familial relationships. Iolites are a traditional gemstone to give for a twenty-first wedding anniversary.