first we give you the meaning of 'Dhanteras' Dhan means wealth or money and 'teras' means thirteen day on which dhanteras celebrated. On Dhanteras god Yama pray for prosperity. Diwali is festival of brightness or light . it is not a one day festival it is celebrated on five days.and the dhanteras is a first day of Diwali celebration. on Dhanteras people buy any new steel items like utensils , Goddess Laxmi lord Ganesha coins, gold coin, and other items.on this occasion you buy any type of gold , platinum, steel& silver items.