Every religion has its symbolic meaning for an oil lamp. Hindus who have been using oil lamps ceremonially for thousands of years believe that a deep spiritual dimension can be achieved by using firelight for religious and cultural ceremonies. During the Vedic period (1500-500BCE) oil lamps emerged in India. Lightening an oil lamp is an integral part of Indian life. The light of the lamp leads us from darkness towards the light, giving a message of peace and light to the man. Several different forms of oil lamps are there, from the traditional round or pear-shaped dish to one with intricate styles and figures.
A handicraft brass lamp called a Nachiarkoil lamp is exclusively made in Nachiarkoil town in Tamil Nadu, India. It is made in different sizes and consists of four parts, which are screwed together. Nachiarkoil lamp is a hollow cast. These lamps are extensively decorated. The Tamil Nadu Crafts Development Corporation ltd. is in these lamps' productions for more than four decades. Craftsmen like Mr. Ramamoorthy, Mr. Babu, and Mr. Dhanabalan are the people who are key persons for making these beautiful lamps.
For more details: http://dsource.in/resource/nachiarkoil-lamp-madurai