Official Harry Potter Earrings Gryffindor Crest Charms on silver plated earring hooks The Crest of the famous Hogwarts house, founded by Godric Gryffindor. These charm earrings have been created from the official Warner Bros style guide. Each charm is approx 20 mm. These earrings come on the official Harry Potter jewelry branded card packaging and shows the Warner Bros logo on the reverse.