Thinking for a few minutes about the asked question she came up with a idea she thought best because it was actually something she knew Muggles were doing and she raised her hand. “Professor, I think that it’s good to carve them into gemstones because some believe that they are connected to living beings AND you can carry them with you” she said slowly, although she herself wasn’t exactly believing in the use of those stones… But, Muggles were doing it so why not mention it here? “It’s also handy because you can easy carry them with you in a small pocket” she continued.