The writing is a Runic font. Here's what they say:
Draco: Draco Malfoy, House of Slytherin
Minerva: Minerva McGonagall (the ll's aren't showing)
Severus: Severus Snape
Voldemort: He Who Must Not Be Named
The photos don't do them justice....I need a new camera. In person, they're a very neutral gre