Get ready for the Christmas In San Francisco Crystal Fair. On November 23-24 (the weekend before Thanksgiving), Fort Mason Center is hosting this great gift-buying celebration. Vendors from Asia, Europe, and Africa (as well as California artisans) will have awe-inspiring gifts for beneath the tree. Minerals, gems, beads, jewelry -an amazing array of merchandise, plus for your delight and entertainment, you can meet up with healers, psychics, aura readers, and get a good massage.