Ministry of Magic Charm on a silver plated necklace. This charm is the exact symbol used and displayed at the Warner Bros Studios in the making of the Harry Potter films. The charm is approx 20mm. The necklace is a silver plated snake chain which is 16 inches with a 2.5 inch extender chain. This necklace comes on the official Harry Potter branded card packaging and shows the Warner Bros logo on the reverse. The Carat Shop are the official licensed manufacturers of Harry Potter Jewellery on behalf of Warner Bros.