The Judaica charms are silver plated, are 3D and are very detailed.
Dimensions (approximate): the kippah clip is 2" long; the widths vary by the charm:
round tree of life: 1" wide
Hamsa with Star, tree tree of life, Star of David L'Chi,Jerusalem Star and Double Star of David: 3/4" wide
Torah Scroll, L'Chi, Healing handing and Kabbalah tree of life 1/2" wide