The House point hourglasses are four giant hourglasses located in the Entrance Hall used to record the number of house points that have been awarded or deducted. There is one hourglass for each of the Hogwarts Houses: Gryffindor, Hufflepuff, Ravenclaw, and Slytherin. When points are earned, some gems (depending on house colours) fall from the upper bulb into the lower. When points have been deducted, they do the opposite, retreating into the upper bulb. For example, when ten points are taken from Gryffindor, ten red gems will fall back into the upper half of the hourglass.
