'Cosmology of Mount Meru according to the Abhidharmakosha (top left and bottom) and Kalachakra (top right) systems.'

'This great "World Mountain" rises at the centre of our universe, with its four directional faces colored white (crystal or silver) in the east, blue (sapphire or lapis) in the south, red (ruby) in the west, and golden (gold) in the north. Surrounding Mount Meru are seven rings of golden mountains, each are separated by freshwater lakes and progressively diminish in height as they range outward.'

Robert Beer, The Handbook of Tibetan Buddhist Symbols, Serindia