The Noble Collection Lumos Harry Potter Gryffindor Charm Bracelet At least 15% of the SRP will go to Lumos Foundation, a non-profit organization founded by J.K. Rowling. Finely crafted, gold plated and set with crystals. Bracelet measures 8 inches in length. Features three exclusive charms: Gryffindor House Crest, the Sorting Hat and a Lumos butterfly. Produced by The Noble Collection. Officially authorized by Warner Bros. and the Lumos Foundation.