Hermione had opened the book already and scanned through the first few pages. The runes were ancient, but she could decipher them. And Professor Dumbledore's notes were somewhat uneven and shaky descriptions beside them. Usually, Hermione was horrified when someone wrote in a book, especially one this ancient, but for this she'd make an exception.
Deluminator? The word shook her out of studying the first pages of the text and her head popped up, turning to find Ron and then going to the thing in his hand. "A Deluminator? A real one." Of course it was real, and it was a stupid thing to ask, but she'd never seen one in person. "They're very rare, Ron."