Q: I love to use vintage glass pearls in my pieces, but very often these old pearls have a coating that is flaking off. While it adds to the character of the piece, I worry that, with wear, the coating will come off entirely. Is there some way to seal the pearls to prevent more of the coating coming off? I've seen Designaseal mentioned in many of these articles--is it appropriate for glass pearls, or will it destroy the coating? Thank you!