House Mascot: Serpent
Slytherin students are typically cunning, ambitious, and resourceful. Slytherins will do anything to get their way. According to Rowling, Slytherin corresponds roughly to the element of water. The house mascot of Slytherin is the serpent, and the house colours are green and silver. The ghost of Slytherin house is The Bloody Baron. The Slytherin dormitories and common room are reached through a bare stone wall in the dungeons. The Slytherin common room is a long, low, dungeon-style room, under the Hogwarts Lake, furnished with green lamps and curved armchairs. The room has a greenish glow, from the pigment colour of the Hogwarts Lake; the giant squid will occasionally swim past windows. Slytherin's Hocrux, and special item, is a beautiful topaz-encrusted amulet, having a letter "S" on it. Its house gem is an emerald. Blood purity is important for Slytherins.