Deepawali is a festival which has been celebrated to commemorate the return of Lord Rama from Vanvaas. When Lord Rama came back from exile, the citizens of Ayodhya lit the entire city with lamps in happiness. It is said that Goddess Lakshmi comes down from heaven on this occasion to bless us on earth. So business places and homes are cleaned and decorated, and colorful Rangoli is made on entrances to welcome Laxmi - the Goddess of wealth. Diyas made of clay are lit and Lord Ganesha, Lord Kubera and Goddess Lakshmi are worshipped.
The festival of Diwali is a 5 days celebration beginning on the 13th day of Kartik (Krishna paksh). This day is known as Dhantrayodashi or Dhanteras. Hindus consider it auspicious to purchase gold or silver in any form - coins, bars, jewellery, idols, utensils, etc on Dhanteras. It is believed that “Dhan” or some form of “precious metal” is a sign of good luck. By purchasing silver or gold on Dhanteras, one is blessed with wealth, prosperity and good luck for the entire year. So to get Goddess Laxmi’s blessings for the entire family and the occupation – business or job, all Hindus take meticulous care to please Her and perform all the rituals, the most important being buying silver or gold.